Hi, I am a complete newb in programming, so apologies if I am asking answers to obvious questions. I tried to implement your crm tutorial (with modifications to suit my needs) for a student project (project of a web app for the final exam at my developer school, but although the app compiles without raising errors and tomcat starts up, I cannot access the login page at localhost:8080/login. I add the stacktrace from the booting up:
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\_/ \__,_| \__,_| \__,_||_||_| |_| \____||_| \_\|_| |_|
e[2m2021-04-13 01:59:37.375e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mcom.vaadin.tutorial.crm.Application e[0;39m e[2m:e[0;39m Starting Application using Java 15.0.2 on LAPTOP-9QBROBB0 with PID 14580 (C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\target\classes started by nikol in C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm)
e[2m2021-04-13 01:59:37.379e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mcom.vaadin.tutorial.crm.Application e[0;39m e[2m:e[0;39m No active profile set, falling back to default profiles: default
e[2m2021-04-13 01:59:37.816e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36m.e.DevToolsPropertyDefaultsPostProcessore[0;39m e[2m:e[0;39m Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
e[2m2021-04-13 01:59:37.817e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36m.e.DevToolsPropertyDefaultsPostProcessore[0;39m e[2m:e[0;39m For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
e[2m2021-04-13 01:59:52.804e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36m.s.d.r.c.RepositoryConfigurationDelegatee[0;39m e[2m:e[0;39m Bootstrapping Spring Data JPA repositories in DEFAULT mode.
e[2m2021-04-13 01:59:53.403e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36m.s.d.r.c.RepositoryConfigurationDelegatee[0;39m e[2m:e[0;39m Finished Spring Data repository scanning in 562 ms. Found 3 JPA repository interfaces.
e[2m2021-04-13 02:00:01.618e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.b.w.embedded.tomcat.TomcatWebServer e[0;39m e[2m:e[0;39m Tomcat initialized with port(s): 8080 (http)
e[2m2021-04-13 02:00:01.777e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.apache.catalina.core.StandardService e[0;39m e[2m:e[0;39m Starting service [Tomcat]
e[2m2021-04-13 02:00:01.778e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36morg.apache.catalina.core.StandardEngine e[0;39m e[2m:e[0;39m Starting Servlet engine: [Apache Tomcat/9.0.44]
e[2m2021-04-13 02:00:03.018e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.a.c.c.C.[Tomcat]
.[localhost]
.
[/] e[0;39m e[2m:e[0;39m Initializing Spring embedded WebApplicationContext
e[2m2021-04-13 02:00:03.019e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mw.s.c.ServletWebServerApplicationContexte[0;39m e[2m:e[0;39m Root WebApplicationContext: initialization completed in 25183 ms
e[2m2021-04-13 02:00:03.352e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mcom.zaxxer.hikari.HikariDataSource e[0;39m e[2m:e[0;39m HikariPool-1 - Starting...
e[2m2021-04-13 02:00:04.463e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mcom.zaxxer.hikari.HikariDataSource e[0;39m e[2m:e[0;39m HikariPool-1 - Start completed.
e[2m2021-04-13 02:00:04.470e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.b.a.h2.H2ConsoleAutoConfiguration e[0;39m e[2m:e[0;39m H2 console available at '/h2-console'. Database available at 'jdbc:h2:mem:a4ee3af8-cbeb-4862-b614-e14bf25675a0'
e[2m2021-04-13 02:00:05.413e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.concurrent.ThreadPoolTaskExecutor e[0;39m e[2m:e[0;39m Initializing ExecutorService 'applicationTaskExecutor'
e[2m2021-04-13 02:00:14.093e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mc.v.f.s.VaadinServletContextInitializer e[0;39m e[2m:e[0;39m Search for subclasses and classes with annotations took 8 seconds
e[2m2021-04-13 02:00:14.098e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mc.v.f.server.startup.DevModeInitializer e[0;39m e[2m:e[0;39m Starting dev-mode updaters in C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm folder.
e[2m2021-04-13 02:00:14.321e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Visited 104 classes. Took 25 ms.
e[2m2021-04-13 02:00:14.415e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Updated npm C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\package.json.
e[2m2021-04-13 02:00:17.620e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Skipping `npm install` because the frontend packages are already installed in the folder 'C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\node_modules' and the hash in the file 'C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\node_modules\.vaadin\vaadin.json' is the same as in 'package.json'
e[2m2021-04-13 02:00:17.621e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Copying frontend resources from jar files ...
e[2m2021-04-13 02:00:36.828e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Visited 13 resources. Took 19208 ms.
e[2m2021-04-13 02:00:46.637e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m No js modules to update 'C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\target\frontend\generated-flow-imports.js' file
e[2m2021-04-13 02:00:46.674e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Visited 104 classes. Took 34 ms.
e[2m2021-04-13 02:00:46.801e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-1]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Updated npm C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\package.json.
e[94mVaadin application has been deployed and started to the context path "/".
e[0me[2m2021-04-13 02:00:46.818e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-1]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Skipping `npm install` because the frontend packages are already installed in the folder 'C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\node_modules' and the hash in the file 'C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\node_modules\.vaadin\vaadin.json' is the same as in 'package.json'
e[2m2021-04-13 02:00:46.818e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-1]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Copying frontend resources from jar files ...
e[2m2021-04-13 02:00:49.554e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-1]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m Visited 13 resources. Took 2735 ms.
e[2m2021-04-13 02:00:50.341e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-1]
e[0;39m e[36mdev-updater e[0;39m e[2m:e[0;39m No js modules to update 'C:\Users\nikol\Desktop\vaadin-crm\vaadin-crm\target\frontend\generated-flow-imports.js' file
e[2m2021-04-13 02:00:50.559e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.hibernate.jpa.internal.util.LogHelper e[0;39m e[2m:e[0;39m HHH000204: Processing PersistenceUnitInfo [name: default]
e[2m2021-04-13 02:00:50.811e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-2]
e[0;39m e[36mdev-webpack e[0;39m e[2m:e[0;39m Starting webpack-dev-server
e[2m2021-04-13 02:00:56.595e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36morg.hibernate.Version e[0;39m e[2m:e[0;39m HHH000412: Hibernate ORM core version 5.4.29.Final
e[2m2021-04-13 02:01:13.261e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.hibernate.annotations.common.Version e[0;39m e[2m:e[0;39m HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
e[2m2021-04-13 02:01:19.714e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36morg.hibernate.dialect.Dialect e[0;39m e[2m:e[0;39m HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
e[2m2021-04-13 02:01:38.692e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36morg.hibernate.tuple.PojoInstantiator e[0;39m e[2m:e[0;39m HHH000182: No default (no-argument) constructor for class: com.vaadin.tutorial.crm.backend.entity.Stock (class must be instantiated by Interceptor)
e[2m2021-04-13 02:01:38.707e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36morg.hibernate.tuple.PojoInstantiator e[0;39m e[2m:e[0;39m HHH000182: No default (no-argument) constructor for class: com.vaadin.tutorial.crm.backend.entity.Campus (class must be instantiated by Interceptor)
e[2m2021-04-13 02:01:48.492e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.h.e.t.j.p.i.JtaPlatformInitiator e[0;39m e[2m:e[0;39m HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
e[2m2021-04-13 02:01:51.135e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mj.LocalContainerEntityManagerFactoryBeane[0;39m e[2m:e[0;39m Initialized JPA EntityManagerFactory for persistence unit 'default'
e[2m2021-04-13 02:01:51.850e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.b.d.a.OptionalLiveReloadServer e[0;39m e[2m:e[0;39m LiveReload server is running on port 35729
e[2m2021-04-13 02:02:05.063e[0;39m e[33m WARNe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mJpaBaseConfiguration$JpaWebConfiguratione[0;39m e[2m:e[0;39m 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
e[2m2021-04-13 02:02:09.376e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/VAADIN/**']
with []
e[2m2021-04-13 02:02:09.377e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/favicon.ico']
with []
e[2m2021-04-13 02:02:09.377e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/robots.txt']
with []
e[2m2021-04-13 02:02:09.377e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/manifest.webmanifest']
with []
e[2m2021-04-13 02:02:09.377e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/sw.js']
with []
e[2m2021-04-13 02:02:09.377e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/offline.html']
with []
e[2m2021-04-13 02:02:09.377e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/icons/**']
with []
e[2m2021-04-13 02:02:09.378e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/images/**']
with []
e[2m2021-04-13 02:02:09.378e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/styles/**']
with []
e[2m2021-04-13 02:02:09.378e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure Ant [pattern='/h2-console/**']
with []
e[2m2021-04-13 02:02:09.469e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.s.web.DefaultSecurityFilterChain e[0;39m e[2m:e[0;39m Will secure any request with [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@7837f789, org.springframework.security.web.context.SecurityContextPersistenceFilter@272a9ef3, org.springframework.security.web.header.HeaderWriterFilter@69de94e3, org.springframework.security.web.authentication.logout.LogoutFilter@4e366e0c, org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter@6c051c2a, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@478da329, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@191c5806, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@3c9740e9, org.springframework.security.web.session.SessionManagementFilter@711d5c9, org.springframework.security.web.access.ExceptionTranslationFilter@741d07d5, org.springframework.security.web.access.intercept.FilterSecurityInterceptor@7e390bb]
e[2m2021-04-13 02:02:16.260e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mo.s.b.w.embedded.tomcat.TomcatWebServer e[0;39m e[2m:e[0;39m Tomcat started on port(s): 8080 (http) with context path ''
e[2m2021-04-13 02:02:16.652e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ restartedMain]
e[0;39m e[36mcom.vaadin.tutorial.crm.Application e[0;39m e[2m:e[0;39m Started Application in 162.527 seconds (JVM running for 171.052)
e[38;5;35m
------------------ Starting Frontend compilation. ------------------
e[0me[2m2021-04-13 02:04:27.307e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-2]
e[0;39m e[36mdev-webpack e[0;39m e[2m:e[0;39m Running webpack to compile frontend resources. This may take a moment, please stand by...
e[2m2021-04-13 02:05:27.316e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[ task-2]
e[0;39m e[36mdev-webpack e[0;39m e[2m:e[0;39m Started webpack-dev-server. Time: 60597ms
e[2m2021-04-13 02:11:11.957e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[n(19)-127.0.0.1]
e[0;39m e[36minMXBeanRegistrar$SpringApplicationAdmine[0;39m e[2m:e[0;39m Application shutdown requested.
e[2m2021-04-13 02:11:14.879e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[n(19)-127.0.0.1]
e[0;39m e[36mj.LocalContainerEntityManagerFactoryBeane[0;39m e[2m:e[0;39m Closing JPA EntityManagerFactory for persistence unit 'default'
e[2m2021-04-13 02:11:14.925e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[n(19)-127.0.0.1]
e[0;39m e[36m.SchemaDropperImpl$DelayedDropActionImple[0;39m e[2m:e[0;39m HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down'
e[2m2021-04-13 02:11:16.478e[0;39m e[33m WARNe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[n(19)-127.0.0.1]
e[0;39m e[36mo.s.b.f.support.DisposableBeanAdapter e[0;39m e[2m:e[0;39m Invocation of destroy method failed on bean with name 'inMemoryDatabaseShutdownExecutor': org.h2.jdbc.JdbcSQLNonTransientConnectionException: La base de données est déjà fermée (pour désactiver la fermeture automatique à l'arrêt de la VM, ajoutez "; DB_CLOSE_ON_EXIT = FALSE" à l'URL db)
Database is already closed (to disable automatic closing at VM shutdown, add ";DB_CLOSE_ON_EXIT=FALSE" to the db URL) [90121-200]
e[2m2021-04-13 02:11:16.478e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[n(19)-127.0.0.1]
e[0;39m e[36mo.s.s.concurrent.ThreadPoolTaskExecutor e[0;39m e[2m:e[0;39m Shutting down ExecutorService 'applicationTaskExecutor'
e[2m2021-04-13 02:11:16.479e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[n(19)-127.0.0.1]
e[0;39m e[36mcom.zaxxer.hikari.HikariDataSource e[0;39m e[2m:e[0;39m HikariPool-1 - Shutdown initiated...
e[2m2021-04-13 02:11:16.635e[0;39m e[32m INFOe[0;39m e[35m14580e[0;39m e[2m---e[0;39m e[2m[n(19)-127.0.0.1]
e[0;39m e[36mcom.zaxxer.hikari.HikariDataSource e[0;39m e[2m:e[0;39m HikariPool-1 - Shutdown completed.
I shut it down after failing to access the login page. I would be extremely grateful for any advice on how to rectify this issue. So far, stackoverflow didn’t help.