Hi guys.
I have the following problem: I have Vaadin14 within a Spring Boot application. It worked a few months ago very good.
mvn clean install
and starting the application worked flawlessly!
Now the code was untouched a few months, nothing changed. When I now work with it again mvn clean install runs fine but starting application gives me:
Failed to find the following imports in the `node_modules` tree:
- @vaadin/flow-frontend/datepickerConnector.js
- @vaadin/flow-frontend/contextMenuConnector-es6.js
- @vaadin/flow-frontend/comboBoxConnector.js
- @vaadin/flow-frontend/ironListConnector.js
- @vaadin/flow-frontend/timepickerConnector.js
- @vaadin/flow-frontend/comboBoxConnector-es6.js
- @vaadin/flow-frontend/ironListStyles.js
- @vaadin/flow-frontend/selectConnector.js
- @vaadin/flow-frontend/vaadin-big-decimal-field.js
- @vaadin/flow-frontend/gridProConnector.js
- @vaadin/flow-frontend/contextMenuConnector.js
- @vaadin/flow-frontend/gridConnector.js
- @vaadin/flow-frontend/flow-component-renderer.js
- @vaadin/flow-frontend/gridConnector-es6.js
- @vaadin/flow-frontend/dndConnector-es6.js
- @vaadin/flow-frontend/ironListConnector-es6.js
- @vaadin/flow-frontend/menubarConnector.js
- @vaadin/flow-frontend/vaadin-grid-flow-selection-column.js
- @vaadin/flow-frontend/dndConnector.js
If the build fails, check that npm packages are installed.
To fix the build remove `package-lock.json` and `node_modules` directory to reset modules.
In addition you may run `npm install` to fix `node_modules` tree structure.
The Tomcat starts “somehow” but frontend is messed up, many errors everywhere
09:58:15.011 [webpack]
ERROR dev-webpack - ERROR in ../target/frontend/generated-flow-imports.js
09:58:15.012 [webpack]
ERROR dev-webpack - Module not found: Error: Can't resolve '@vaadin/flow-frontend/comboBoxConnector-es6.js' in 'C:\Users\fvoelker\git\test\edc\target\frontend'
09:58:15.014 [webpack]
ERROR dev-webpack - @ ../target/frontend/generated-flow-imports.js 6:0-56
09:58:15.014 [webpack]
ERROR dev-webpack -
09:58:15.015 [webpack]
ERROR dev-webpack - ERROR in ../target/frontend/generated-flow-imports.js
09:58:15.015 [webpack]
ERROR dev-webpack - Module not found: Error: Can't resolve '@vaadin/flow-frontend/comboBoxConnector-es6.js' in 'C:\Users\fvoelker\git\test\edc\target\frontend'
09:58:15.015 [webpack]
ERROR dev-webpack - @ ../target/frontend/generated-flow-imports.js 6:0-56
09:58:15.016 [webpack]
ERROR dev-webpack -
09:58:15.016 [webpack]
ERROR dev-webpack - ERROR in ../target/frontend/generated-flow-imports.js
09:58:15.016 [webpack]
ERROR dev-webpack - Module not found: Error: Can't resolve '@vaadin/flow-frontend/comboBoxConnector.js' in 'C:\Users\fvoelker\git\test\edc\target\frontend'
09:58:15.017 [webpack]
ERROR dev-webpack - @ ../target/frontend/generated-flow-imports.js 79:0-52
09:58:15.017 [webpack]
ERROR dev-webpack -
09:58:15.017 [webpack]
ERROR dev-webpack - ERROR in ../target/frontend/generated-flow-imports.js
09:58:15.018 [webpack]
ERROR dev-webpack - Module not found: Error: Can't resolve '@vaadin/flow-frontend/comboBoxConnector.js' in 'C:\Users\fvoelker\git\test\edc\target\frontend'
09:58:15.018 [webpack]
ERROR dev-webpack - @ ../target/frontend/generated-flow-imports.js 79:0-52
09:58:15.019 [webpack]
ERROR dev-webpack -
09:58:15.019 [webpack]
ERROR dev-webpack - ERROR in ../target/frontend/generated-flow-imports.js
09:58:15.019 [webpack]
ERROR dev-webpack - Module not found: Error: Can't resolve '@vaadin/flow-frontend/contextMenuConnector-es6.js' in 'C:\Users\fvoelker\git\test\edc\target\frontend'
on another machine I get the following error
10:08:26.764 [main]
INFO dev-updater - Visited 97 classes. Took 16 ms.
10:08:26.774 [main]
INFO dev-updater - Added 40 dependencies to 'C:\Users\fvoelker\git\edc\target\frontend\package.json'
10:08:26.785 [main]
INFO dev-updater - Updated npm C:\Users\fvoelker\git\edc\target\frontend\package.json.
10:08:26.794 [main]
INFO dev-updater - Running `npm install` to resolve and optionally download frontend dependencies. This may take a moment, please stand by...
npm WARN deprecated chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.
npm WARN deprecated core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.
npm WARN deprecated fsevents@1.2.13: fsevents 1 will break on node v14+ and could be using insecure binaries. Upgrade to fsevents 2.
npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
npm ERR! code ENOLOCAL
npm ERR! Could not install from "target\flow-frontend" as it does not contain a package.json file.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\fvoelker\AppData\Roaming\npm-cache\_logs\2020-08-25T08_08_34_414Z-debug.log
10:08:34.446 [main]
ERROR dev-updater - Command `C:\Tools\nodejs\npm.cmd --no-update-notifier install` failed:
10:08:34.447 [main]
ERROR dev-updater - >>> Dependency ERROR. Check that all required dependencies are deployed in npm repositories.
Following the instructions:
To fix the build remove package-lock.json and node_modules directory to reset modules.
In addition you may run npm install to fix node_modules tree structure.
did NOT do the trick