Configured and downloaded Form application for Vaadin 17 (pre) with TypeScr

Is there a link for the required versions of tools, etc for Vaadin 17?
Following is the output from the mvn spring-boot:run from Windows 10 DOS window.
The typescript errors are towards the bottom of the output.
Any suggestions on how to fix the errors is greatly appreciated.

C:\sts_projects\media-fusion>mvn spring-boot:run
[INFO]
 Scanning for projects...
[INFO]

[INFO]
 ------------------------------------------------------------------------
[INFO]
 Building Media Fusion 1.0-SNAPSHOT
[INFO]
 ------------------------------------------------------------------------
[INFO]

[INFO]
 >>> spring-boot-maven-plugin:2.3.2.RELEASE:run (default-cli) > test-compile @ media-fusion >>>
[INFO]

[INFO]
 --- maven-resources-plugin:3.1.0:resources (default-resources) @ media-fusion ---
[INFO]
 Using 'UTF-8' encoding to copy filtered resources.
[INFO]
 Copying 1 resource
[INFO]
 Copying 4 resources
[INFO]

[INFO]
 --- vaadin-maven-plugin:17.0.0.beta1:prepare-frontend (default) @ media-fusion ---
[INFO]
 writing file C:\sts_projects\media-fusion\target\flow-frontend\package.json.
[INFO]
 writing file C:\sts_projects\media-fusion\target\flow-frontend\form\package.json.
[INFO]
 Copying frontend resources from jar files ...
[INFO]
 Visited 178 resources. Took 174 ms.
[INFO]
 Created webpack configuration file: 'C:\sts_projects\media-fusion\webpack.config.js'
[INFO]

[INFO]
 --- maven-compiler-plugin:3.8.1:compile (default-compile) @ media-fusion ---
[INFO]
 Changes detected - recompiling the module!
[INFO]
 Compiling 10 source files to C:\sts_projects\media-fusion\target\classes
[INFO]

[INFO]
 --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ media-fusion ---
[INFO]
 Using 'UTF-8' encoding to copy filtered resources.
[INFO]
 skip non existing resourceDirectory C:\sts_projects\media-fusion\src\test\resources
[INFO]

[INFO]
 --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @ media-fusion ---
[INFO]
 No sources to compile
[INFO]

[INFO]
 <<< spring-boot-maven-plugin:2.3.2.RELEASE:run (default-cli) < test-compile @ media-fusion <<<
[INFO]

[INFO]

[INFO]
 --- spring-boot-maven-plugin:2.3.2.RELEASE:run (default-cli) @ media-fusion ---
[INFO]
 Attaching agents: []
 __  __            _  _          _____              _
|  \/  |  ___   __| |(_)  __ _  |  ___| _   _  ___ (_)  ___   _ __
| |\/| | / _ \ / _` || | / _` | | |_   | | | |/ __|| | / _ \ | '_ \
| |  | ||  __/| (_| || || (_| | |  _|  | |_| |\__ \| || (_) || | | |
|_|  |_| \___| \__,_||_| \__,_| |_|     \__,_||___/|_| \___/ |_| |_|


2020-08-17 22:52:31.650  INFO 31796 --- [  restartedMain]
 com.donaldson.medafusion.Application     : Starting Application on BLML-DNYFYY2 with PID 31796 (C:\sts_projects\media-fusion\target\classes started by DVanWate in C:\sts_projects\media-fusion)
2020-08-17 22:52:31.652  INFO 31796 --- [  restartedMain]
 com.donaldson.medafusion.Application     : No active profile set, falling back to default profiles: default
2020-08-17 22:52:31.684  INFO 31796 --- [  restartedMain]
 .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2020-08-17 22:52:31.684  INFO 31796 --- [  restartedMain]
 .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2020-08-17 22:52:32.097  INFO 31796 --- [  restartedMain]
 .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFERRED mode.
2020-08-17 22:52:32.138  INFO 31796 --- [  restartedMain]
 .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 35ms. Found 1 JPA repository interfaces.
2020-08-17 22:52:32.635  INFO 31796 --- [  restartedMain]
 o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-08-17 22:52:32.641  INFO 31796 --- [  restartedMain]
 o.apache.catalina.core.StandardService   : Starting service [Tomcat]

2020-08-17 22:52:32.642  INFO 31796 --- [  restartedMain]
 org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.37]

2020-08-17 22:52:32.725  INFO 31796 --- [  restartedMain]
 o.a.c.c.C.[Tomcat]
.[localhost]
.
[/]       : Initializing Spring embedded WebApplicationContext
2020-08-17 22:52:32.725  INFO 31796 --- [  restartedMain]
 w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1040 ms
2020-08-17 22:52:32.763  INFO 31796 --- [  restartedMain]
 com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2020-08-17 22:52:32.831  INFO 31796 --- [  restartedMain]
 com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2020-08-17 22:52:32.835  INFO 31796 --- [  restartedMain]
 o.s.b.a.h2.H2ConsoleAutoConfiguration    : H2 console available at '/h2-console'. Database available at 'jdbc:h2:mem:b041829e-0986-4a7e-8e8e-d125a177fb96'
2020-08-17 22:52:32.900  INFO 31796 --- [  restartedMain]
 c.v.f.s.VaadinServletContextInitializer  : Search for VaadinAppShell took 36 ms
2020-08-17 22:52:32.901  INFO 31796 --- [  restartedMain]
 c.v.f.s.s.VaadinAppShellInitializer      : Using com.donaldson.medafusion.AppShell class for configuring `index.html` response
2020-08-17 22:52:36.018  INFO 31796 --- [  restartedMain]
 c.v.f.s.VaadinServletContextInitializer  : Search for subclasses and classes with annotations took 3068 ms
2020-08-17 22:52:36.020  INFO 31796 --- [  restartedMain]
 c.v.f.server.startup.DevModeInitializer  : Starting dev-mode updaters in C:\sts_projects\media-fusion folder.
2020-08-17 22:52:36.040  INFO 31796 --- [  restartedMain]
 c.v.f.s.f.s.FullDependenciesScanner      : Visited 97 classes. Took 11 ms.
e[94mVaadin application has been deployed and started to the context path "/".
e[0m2020-08-17 22:52:36.049  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.f.TaskGeneratePackageJson        : writing file C:\sts_projects\media-fusion\target\flow-frontend\package.json.
2020-08-17 22:52:36.052  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.f.TaskGeneratePackageJson        : writing file C:\sts_projects\media-fusion\target\flow-frontend\form\package.json.
2020-08-17 22:52:36.060  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.c.g.OpenApiSpecGenerator         : Parsing java files from [C:\sts_projects\media-fusion\src\main\java]

2020-08-17 22:52:36.091  INFO 31796 --- [  restartedMain]
 o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-08-17 22:52:36.123  INFO 31796 --- [         task-1]
 o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]

2020-08-17 22:52:36.153  INFO 31796 --- [         task-1]
 org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.4.18.Final
2020-08-17 22:52:36.168  WARN 31796 --- [  restartedMain]
 JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2020-08-17 22:52:36.235  INFO 31796 --- [         task-1]
 o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-08-17 22:52:36.298  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.c.g.OpenApiSpecGenerator         : writing file C:\sts_projects\media-fusion\target\generated-resources\openapi.json
2020-08-17 22:52:36.310  INFO 31796 --- [         task-1]
 org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
2020-08-17 22:52:36.382  WARN 31796 --- [  restartedMain]
 o.s.b.d.a.OptionalLiveReloadServer       : Unable to start LiveReload server
2020-08-17 22:52:36.450  WARN 31796 --- [onPool-worker-1]
 i.s.c.v3.ignore.CodegenIgnoreProcessor   : Output directory does not exist, or is inaccessible. No file (.swagger-codegen-ignore) will be evaluated.
2020-08-17 22:52:36.463  INFO 31796 --- [  restartedMain]
 o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2020-08-17 22:52:36.465  INFO 31796 --- [  restartedMain]
 DeferredRepositoryInitializationListener : Triggering deferred initialization of Spring Data repositoriesà
2020-08-17 22:52:36.717  INFO 31796 --- [onPool-worker-1]
 io.swagger.codegen.v3.AbstractGenerator  : writing file C:\sts_projects\media-fusion\frontend\generated\com\donaldson\medafusion\data\AbstractEntityModel.ts
2020-08-17 22:52:36.736  INFO 31796 --- [onPool-worker-1]
 io.swagger.codegen.v3.AbstractGenerator  : writing file C:\sts_projects\media-fusion\frontend\generated\com\donaldson\medafusion\data\AbstractEntity.ts
2020-08-17 22:52:36.743  INFO 31796 --- [onPool-worker-1]
 io.swagger.codegen.v3.AbstractGenerator  : writing file C:\sts_projects\media-fusion\frontend\generated\com\donaldson\medafusion\data\entity\PersonModel.ts
2020-08-17 22:52:36.752  INFO 31796 --- [onPool-worker-1]
 io.swagger.codegen.v3.AbstractGenerator  : writing file C:\sts_projects\media-fusion\frontend\generated\com\donaldson\medafusion\data\entity\Person.ts
2020-08-17 22:52:36.763  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.c.g.VaadinConnectTsGenerator     : The class 'PersonEndpoint' doesn't have JavaDoc or it is invalid. This results in no TsDoc for the generated module 'PersonEndpoint'.
2020-08-17 22:52:36.774  INFO 31796 --- [onPool-worker-1]
 io.swagger.codegen.v3.AbstractGenerator  : writing file C:\sts_projects\media-fusion\frontend\generated\PersonEndpoint.ts
2020-08-17 22:52:36.785  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.c.g.VaadinConnectClientGenerator : writing file C:\sts_projects\media-fusion\frontend\generated\connect-client.default.ts
2020-08-17 22:52:36.789  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.frontend.TaskUpdatePackages      : Running `pnpm install` to resolve and optionally download frontend dependencies. This may take a moment, please stand by...
2020-08-17 22:52:36.792  WARN 31796 --- [onPool-worker-1]
 c.v.f.s.frontend.TaskUpdatePackages      : Couldn't find  dev dependencies file. Dev dependencies won't be locked
2020-08-17 22:52:36.799  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.frontend.TaskUpdatePackages      : Generated pnpmfile hook file: 'C:\sts_projects\media-fusion\pnpmfile.js'
2020-08-17 22:52:36.887  INFO 31796 --- [         task-1]
 o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]

2020-08-17 22:52:36.892  INFO 31796 --- [         task-1]
 j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2020-08-17 22:52:36.995  INFO 31796 --- [  restartedMain]
 DeferredRepositoryInitializationListener : Spring Data repositories initialized!
2020-08-17 22:52:37.000  INFO 31796 --- [  restartedMain]
 com.donaldson.medafusion.Application     : Started Application in 5.633 seconds (JVM running for 6.11)
2020-08-17 22:52:37.072  INFO 31796 --- [  restartedMain]
 c.d.m.data.generator.DataGenerator       : Generating demo data
2020-08-17 22:52:37.072  INFO 31796 --- [  restartedMain]
 c.d.m.data.generator.DataGenerator       : ... generating 100 Person entities...
2020-08-17 22:52:37.133  INFO 31796 --- [  restartedMain]
 c.d.m.data.generator.DataGenerator       : Generated demo data
Using hooks from: C:\sts_projects\media-fusion\pnpmfile.js
readPackage hook is declared. Manifests of dependencies might get overridden
Packages: +824
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Resolving: total 825, reused 825, downloaded 0, done
node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-usage-statistics/2.1.0/node_modules/@vaadin/vaadin-usage-statistics: Running postinstall script, done in 331ms
node_modules/.pnpm/registry.npmjs.org/core-js/2.6.11/node_modules/core-js: Running postinstall script, done in 337ms

dependencies:
+ @polymer/iron-icon 3.0.1
+ @polymer/iron-list 3.1.0
+ @polymer/polymer 3.2.0 (3.4.1 is available)
+ @vaadin/flow-frontend 1.0.0 <- target\flow-frontend
+ @vaadin/form 1.0.0 <- target\flow-frontend\form
+ @vaadin/router 1.7.2
+ @vaadin/vaadin-accordion 1.2.0-beta1
+ @vaadin/vaadin-app-layout 2.2.0-beta1
+ @vaadin/vaadin-board 2.2.0-beta1
+ @vaadin/vaadin-button 2.4.0-beta1
+ @vaadin/vaadin-charts 7.0.0-beta1
+ @vaadin/vaadin-checkbox 2.4.0-beta1
+ @vaadin/vaadin-combo-box 5.3.0-beta1
+ @vaadin/vaadin-confirm-dialog 1.3.0-beta1
+ @vaadin/vaadin-context-menu 4.5.0-beta1
+ @vaadin/vaadin-cookie-consent 1.2.0-beta1
+ @vaadin/vaadin-core-shrinkwrap 17.0.0-beta1
+ @vaadin/vaadin-crud 1.3.0-beta1
+ @vaadin/vaadin-custom-field 1.2.0-beta1
+ @vaadin/vaadin-date-picker 4.3.0-beta1
+ @vaadin/vaadin-date-time-picker 1.3.0-beta1
+ @vaadin/vaadin-details 1.2.0-beta1
+ @vaadin/vaadin-dialog 2.5.0-beta1
+ @vaadin/vaadin-form-layout 2.3.0-beta1
+ @vaadin/vaadin-grid 5.7.0-beta1
+ @vaadin/vaadin-grid-pro 2.2.0-beta1
+ @vaadin/vaadin-icons 4.3.1
+ @vaadin/vaadin-item 2.3.0-beta1
+ @vaadin/vaadin-list-box 1.4.0-beta1
+ @vaadin/vaadin-login 1.2.0-beta1
+ @vaadin/vaadin-lumo-styles 1.6.0
+ @vaadin/vaadin-material-styles 1.3.2
+ @vaadin/vaadin-menu-bar 1.2.0-beta1
+ @vaadin/vaadin-notification 1.6.0-beta1
+ @vaadin/vaadin-ordered-layout 1.4.0-beta1
+ @vaadin/vaadin-progress-bar 1.3.0-beta1
+ @vaadin/vaadin-radio-button 1.4.0-beta1
+ @vaadin/vaadin-rich-text-editor 1.3.0-beta1
+ @vaadin/vaadin-select 2.3.0-beta1
+ @vaadin/vaadin-shrinkwrap 17.0.0-beta1
+ @vaadin/vaadin-split-layout 4.3.0-beta1
+ @vaadin/vaadin-tabs 3.2.0-beta1
+ @vaadin/vaadin-text-field 2.7.0-beta1
+ @vaadin/vaadin-time-picker 2.3.0-beta1
+ @vaadin/vaadin-upload 4.4.0-beta1

devDependencies:
+ @types/validator 10.11.3 (13.1.0 is available)
+ awesome-typescript-loader 5.2.1
+ chokidar 3.4.0 (3.4.2 is available)
+ compression-webpack-plugin 3.1.0 (5.0.0 is available)
+ copy-webpack-plugin 5.1.1 (6.0.3 is available)
+ html-webpack-plugin 3.2.0 (4.3.0 is available)
+ lit-element 2.3.1
+ lit-html 1.2.1
+ progress-webpack-plugin 0.0.24
+ raw-loader 4.0.0 (4.0.1 is available)
+ script-ext-html-webpack-plugin 2.1.4
+ terser 4.6.7 (5.1.0 is available)
+ typescript 3.8.3 (3.9.7 is available)
+ validator 12.0.0 (13.1.1 is available)
+ webpack 4.42.0 (4.44.1 is available)
+ webpack-babel-multi-target-plugin 2.3.3 (2.5.0 is available)
+ webpack-cli 3.3.11 (3.3.12 is available)
+ webpack-dev-server 3.10.3 (3.11.0 is available)
+ webpack-merge 4.2.2 (5.1.1 is available)
2020-08-17 22:52:57.680  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.frontend.TaskUpdatePackages      : Frontend dependencies resolved successfully.
2020-08-17 22:52:57.683  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.frontend.TaskCopyFrontendFiles   : Copying frontend resources from jar files ...
2020-08-17 22:52:57.890  INFO 31796 --- [onPool-worker-1]
 c.v.f.s.frontend.TaskCopyFrontendFiles   : Visited 15 resources. Took 206 ms.
2020-08-17 22:52:57.919  INFO 31796 --- [onPool-worker-1]
 c.v.f.server.frontend.TaskUpdateImports  : Updated C:\sts_projects\media-fusion\target\frontend\generated-flow-imports.js
2020-08-17 22:52:57.921  INFO 31796 --- [onPool-worker-1]
 c.v.f.server.frontend.TaskUpdateImports  : Updated C:\sts_projects\media-fusion\target\frontend\generated-flow-imports.d.ts
2020-08-17 22:52:57.922  INFO 31796 --- [onPool-worker-1]
 com.vaadin.flow.server.DevModeHandler    : Starting webpack-dev-server

------------------ Starting Frontend compilation. ------------------
2020-08-17 22:53:02.441  INFO 31796 --- [onPool-worker-1]
 com.vaadin.flow.server.DevModeHandler    : Running webpack to compile frontend resources. This may take a moment, please stand by...
[10%]
 Build modules...(0 of 0 modules )
i ?wds?: Project is running at http://localhost:59556/webpack-dev-server/
i ?wds?: webpack output is served from /VAADIN/
[14%]
 Build modules...(37 of 86 modules
node_modules\.pnpm\registry.npmjs.org\@vaadin\vaadin-ordered-layout\1.4.0-beta1\
[95%]
 Optimize modules...
i ?atl?: Checking started in a separate process...
[98%]
 Emmit files...
? ?wdm?: Hash: 141256e59824b7c55e5e
Version: webpack 4.42.0
Time: 13105ms
Built at: 08/17/2020 10:53:17 PM
                                            Asset       Size  Chunks                                Chunk Names
     build/vaadin-0-73a9e8c5aa8ec89a95af.cache.js    349 KiB       0  [emitted]
 [immutable]

     build/vaadin-1-1bd82497b7f3b6f7cfec.cache.js    188 KiB       1  [emitted]
 [immutable]

    build/vaadin-10-211eb8c6d4a18e0406b1.cache.js   21.7 KiB      10  [emitted]
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    build/vaadin-11-c6d67009b85eb59e2d2f.cache.js    341 KiB      11  [emitted]
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    build/vaadin-12-28461590cc069e3bdb38.cache.js   92.5 KiB      12  [emitted]
 [immutable]

     build/vaadin-2-e719c0210e02ab8bf7be.cache.js   1.08 MiB       2  [emitted]
 [immutable]

     build/vaadin-3-cdc26d74ad7c11b1b660.cache.js    114 KiB       3  [emitted]
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     build/vaadin-4-7297073441bb1a41a9dd.cache.js    214 KiB       4  [emitted]
 [immutable]

     build/vaadin-5-7018936ff55336b6d464.cache.js    192 KiB       5  [emitted]
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     build/vaadin-6-6ddbb80d4ddd699cc12a.cache.js     13 MiB       6  [emitted]
 [immutable]
  [big]

     build/vaadin-7-346edc08413612421971.cache.js    328 KiB       7  [emitted]
 [immutable]

     build/vaadin-8-67faecfe127e21eff63c.cache.js     23 KiB       8  [emitted]
 [immutable]

     build/vaadin-9-5e8d3f8219822fb814b8.cache.js   2.95 KiB       9  [emitted]
 [immutable]

build/vaadin-bundle-c7ac46a7c7039778e011.cache.js   2.08 MiB  bundle  [emitted]
 [immutable]
  [big]
  bundle
build/vaadin-export-158c48524832455f95c7.cache.js   16.5 MiB  export  [emitted]
 [immutable]
  [big]
  export
                                       index.html  722 bytes          [emitted]

Entrypoint bundle [big]
 = build/vaadin-bundle-c7ac46a7c7039778e011.cache.js
Entrypoint export [big]
 = build/vaadin-export-158c48524832455f95c7.cache.js
[../node_modules/.pnpm/registry.npmjs.org/@polymer/iron-icon/3.0.1/node_modules/@polymer/iron-icon/iron-icon.js]
 5.5 KiB {bundle} {export} [built]

[../node_modules/.pnpm/registry.npmjs.org/@polymer/iron-list/3.1.0/node_modules/@polymer/iron-list/iron-list.js]
 59.3 KiB {export} {6} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/router/1.7.2/node_modules/@vaadin/router/dist/vaadin-router.js]
 90.7 KiB {bundle} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-accordion/1.2.0-beta1/node_modules/@vaadin/vaadin-accordion/theme/lumo/vaadin-accordion.js]
 78 bytes {export} {6} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-app-layout/2.2.0-beta1/node_modules/@vaadin/vaadin-app-layout/theme/lumo/vaadin-app-layout.js]
 81 bytes {export} {4} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-app-layout/2.2.0-beta1/node_modules/@vaadin/vaadin-app-layout/theme/lumo/vaadin-drawer-toggle.js]
 87 bytes {export} {4} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-board/2.2.0-beta1/node_modules/@vaadin/vaadin-board/vaadin-board-row.js]
 86 bytes {export} {6} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-board/2.2.0-beta1/node_modules/@vaadin/vaadin-board/vaadin-board.js]
 78 bytes {export} {6} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-button/2.4.0-beta1/node_modules/@vaadin/vaadin-button/theme/lumo/vaadin-button.js]
 73 bytes {export} {2} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-charts/7.0.0-beta1/node_modules/@vaadin/vaadin-charts/src/vaadin-chart.js]
 58.8 KiB {export} {6} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-checkbox/2.4.0-beta1/node_modules/@vaadin/vaadin-checkbox/theme/lumo/vaadin-checkbox-group.js]
 127 bytes {export} {6} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-checkbox/2.4.0-beta1/node_modules/@vaadin/vaadin-checkbox/theme/lumo/vaadin-checkbox.js]
 77 bytes {export} {2} [built]

[../node_modules/.pnpm/registry.npmjs.org/@vaadin/vaadin-combo-box/5.3.0-beta1/node_modules/@vaadin/vaadin-combo-box/theme/lumo/vaadin-combo-box.js]
 171 bytes {export} {6} [built]

[../target/frontend/generated-flow-imports.js]
 5.04 KiB {export} {7} [built]

[./index.ts]
 1.39 KiB {bundle} [built]

    + 591 hidden modules

ERROR in ./views/mediafusion/media-fusion-view.ts
Module not found: Error: Can't resolve '../../generated/com/example/application/data/entity/PersonModel' in 'C:\sts_projects\media-fusion\frontend\views\mediafusion'
 @ ./views/mediafusion/media-fusion-view.ts 25:0-90 33:39-50
 @ ./index.ts

ERROR in [at-loader]
 ./frontend/views/mediafusion/media-fusion-view.ts:20:20
    TS2307: Cannot find module '../../generated/com/example/application/data/entity/Person'.

ERROR in [at-loader]
 ./frontend/views/mediafusion/media-fusion-view.ts:27:25
    TS2307: Cannot find module '../../generated/com/example/application/data/entity/PersonModel'.

ERROR in [at-loader]
 ./frontend/views/mediafusion/media-fusion-view.ts:74:48
    TS2339: Property 'firstName' does not exist on type 'AbstractModel<unknown>'.

ERROR in [at-loader]
 ./frontend/views/mediafusion/media-fusion-view.ts:79:48
    TS2339: Property 'lastName' does not exist on type 'AbstractModel<unknown>'.

ERROR in [at-loader]
 ./frontend/views/mediafusion/media-fusion-view.ts:84:48
    TS2339: Property 'email' does not exist on type 'AbstractModel<unknown>'.

ERROR in [at-loader]
 ./frontend/views/mediafusion/media-fusion-view.ts:130:34
    TS2345: Argument of type '(entity: Person) => Promise<Person>' is not assignable to parameter of type '(value: unknown) => Promise<unknown>'.
  Types of parameters 'entity' and 'value' are incompatible.
    Type 'unknown' is not assignable to type 'Person'.
Child html-webpack-plugin for "index.html":
     1 asset
    Entrypoint undefined = index.html
    [../node_modules/.pnpm/registry.npmjs.org/html-webpack-plugin/3.2.0_webpack@4.42.0/node_modules/html-webpack-plugin/lib/loader.js!./index.html]
 887 bytes {0} [built]

    [../node_modules/.pnpm/registry.npmjs.org/lodash/4.17.15/node_modules/lodash/lodash.js]
 528 KiB {0} [built]

    [../node_modules/.pnpm/registry.npmjs.org/webpack/4.42.0_webpack@4.42.0/node_modules/webpack/buildin/global.js]
 472 bytes {0} [built]

    [../node_modules/.pnpm/registry.npmjs.org/webpack/4.42.0_webpack@4.42.0/node_modules/webpack/buildin/module.js]
 497 bytes {0} [built]

i ?wdm?: Failed to compile.

------------------ Frontend compilation failed. ------------------

2020-08-17 22:53:17.535  INFO 31796 --- [onPool-worker-1]
 com.vaadin.flow.server.DevModeHandler    : Started webpack-dev-server. Time: 19613ms

Hi,

based on the output you selected com.donaldson.medafusion as the group id BUT for whatever reason, the form tries to import the PersonModel using com.example.application.

I suspect this is a bug in start.vaadin.com and you can get it to work by fixing the imports in media-fusion-view.ts

start.vaadin.com is now fixed so you if you create a the project again, it should work without fixes.

I created the project again and things are working properly.
Thanks Artur