An internal error occurred during: "Send Classpath Notifications". org/eclipse/lsp4e/LanguageServers

[shubhamkundal]

whenever creating or updating meven(SpringBoot) project getting error as "An internal error occurred during: "Send Classpath Notifications".org/eclipse/lsp4e/LanguageServers". Due to this not able to connect datasource also. Please help.

[martinlippert]

Can you please share more information? Which version of the Spring Tools do you use? For VSCode? The Eclipse-based distribution? Where does the error show up? Is there a stack trace showing up somewhere (in case of Eclipse in the Error Log View, for example)? Do you have steps how to reproduce this error? Or a sample project?

[shubhamkundal]

yes I can reproduce this error but stacktrace is not there in logs

[shubhamkundal]

while updating the project and while adding any dependency this error is coming

[martinlippert]

Okay, so this is the Eclipse-based tooling. Do you use the Spring Tools for Eclipse distribution or did you install the Spring Tools as an additional plugin to your existing Eclipse installation? It seems to me like something went wrong during the install process, maybe some parts of a specific component did not get installed correctly.

Please also take a look at the Error Log view to se if there is some related item showing up with more information.
You could also enable the additional logging of the language server process via the Preferences -> Language Servers -> Spring Language Servers, and enable the Logging to Console option there. After a restart of the IDE, this change should be active and you might see additional log output appearing in the console view. Please paste that output here as well.

[shubhamkundal]

please find additional logs below :

21:19:32.896 [main] INFO o.s.i.v.b.a.BootLanguageServerBootApp - Starting BootLanguageServerBootApp using Java 17.0.2 with PID 9524 (C:\Users\Admin.p2\pool\plugins\org.springframework.tooling.boot.ls_1.51.0.202312011752\servers\spring-boot-language-server\BOOT-INF\classes started by Admin in C:\Users\Admin\Desktop)
21:19:32.901 [main] INFO o.s.i.v.b.a.BootLanguageServerBootApp - No active profile set, falling back to 1 default profile: "default"
21:19:35.618 [main] INFO o.s.i.v.boot.app.SpringSymbolIndex - project listener registered
21:19:36.297 [main] INFO o.s.i.v.b.a.BootLanguageServerBootApp - Started BootLanguageServerBootApp in 5.602 seconds (process running for 19.347)
21:19:36.302 [main] INFO o.s.i.v.c.l.LanguageServerRunner - java.home = C:\Program Files\Java\jdk-17.0.2
21:19:36.307 [LanguageServerApp-lifecycle] INFO o.s.i.v.c.l.LanguageServerRunner - Server ready to start after 19358 ms
21:19:36.307 [LanguageServerApp-lifecycle] INFO o.s.i.v.c.l.LanguageServerRunner - Starting LS as client
21:19:36.308 [LanguageServerApp-lifecycle] INFO o.s.i.v.c.l.LanguageServerRunner - Connected to parent using stdio
21:19:36.631 [pool-13-thread-1] INFO o.s.i.v.c.l.u.SimpleLanguageServer - Initializing
21:19:36.691 [pool-13-thread-1] INFO o.s.i.v.c.l.u.CompletionServerCapabilityRegistration - hasDynamicCompletionRegistration = false
21:19:36.694 [pool-13-thread-1] INFO o.s.i.v.c.l.u.CompletionServerCapabilityRegistration - Registering Completion Capability Statically
21:19:36.695 [pool-13-thread-1] INFO o.s.i.v.c.l.u.SimpleLanguageServer - Returning server capabilities to client
21:19:36.827 [pool-13-thread-1] INFO o.s.i.v.c.l.u.SimpleTextDocumentService - change arrived: 1
21:19:36.858 [Simple-Language-Server main thread] INFO o.s.i.v.b.a.BootVersionValidationConfig - Started Boot Version reconciler
21:19:36.876 [Simple-Language-Server main thread] INFO o.s.i.v.b.jdt.ls.JdtLsProjectCache - INIT CLASSPATH LISTENER enableClasspath=true
21:19:36.885 [Simple-Language-Server main thread] INFO o.s.i.v.b.jdt.ls.JdtLsProjectCache - Enable classpath listener enabled = true current enablement = false
21:19:36.892 [Simple-Language-Server main thread] INFO o.s.i.v.b.jdt.ls.JdtLsProjectCache - Adding classpath listener enabled=true
21:19:36.894 [Simple-Language-Server main thread] INFO o.s.i.v.b.jdt.ls.JdtLsProjectCache - Project Observer is supported
21:19:36.928 [pool-13-thread-1] INFO o.s.i.v.b.j.u.CompilationUnitCache - Invalidate AST for file:///C:/Users/Admin/Desktop/SpringBoot/Boot04-BulkLoadingApp/src/main/java/in/ineuron/comp/Company.java
21:19:36.953 [pool-5-thread-3] INFO o.s.i.v.b.j.u.CompilationUnitCache - CU Cache: work item submitted for doc file:///C:/Users/Admin/Desktop/SpringBoot/Boot04-BulkLoadingApp/src/main/java/in/ineuron/comp/Company.java
21:19:36.954 [pool-5-thread-1] INFO o.s.i.v.b.j.u.CompilationUnitCache - CU Cache: work item submitted for doc file:///C:/Users/Admin/Desktop/SpringBoot/Boot04-BulkLoadingApp/src/main/java/in/ineuron/comp/Company.java
21:19:36.957 [pool-5-thread-2] INFO o.s.i.v.b.j.u.CompilationUnitCache - CU Cache: work item submitted for doc file:///C:/Users/Admin/Desktop/SpringBoot/Boot04-BulkLoadingApp/src/main/java/in/ineuron/comp/Company.java
21:19:37.100 [Simple-Language-Server main thread] INFO o.s.i.v.c.l.u.SimpleLanguageServer - Initialization completed after 20150 ms
21:19:37.105 [Simple-Language-Server main thread] INFO o.s.i.v.boot.app.SpringSymbolIndex - update settings of spring indexer - start
21:19:37.110 [Simple-Language-Server main thread] INFO o.s.i.v.boot.app.SpringSymbolIndex - update settings of spring indexer - done
21:19:37.115 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.BootJavaLanguageServerComponents - update live process tracker settings - start
21:19:37.115 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.BootJavaLanguageServerComponents - update live process tracker settings - done
21:19:37.116 [Simple-Language-Server main thread] INFO o.s.i.v.b.a.BootLanguageServerInitializer - Triggering reconcile on all open documents
21:19:37.122 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.l.v.SpringProcessConnectorRemote - updating settings for remote processses to track - start
21:19:37.123 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.l.v.SpringProcessConnectorRemote - updating settings for remote processses to track - done
21:19:37.123 [Simple-Language-Server main thread] INFO o.s.i.v.boot.app.SpringSymbolIndex - update settings of spring indexer - start
21:19:37.124 [Simple-Language-Server main thread] INFO o.s.i.v.boot.app.SpringSymbolIndex - update settings of spring indexer - done
21:19:37.125 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.BootJavaLanguageServerComponents - update live process tracker settings - start
21:19:37.125 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.BootJavaLanguageServerComponents - update live process tracker settings - done
21:19:37.125 [Simple-Language-Server main thread] INFO o.s.i.v.b.a.BootLanguageServerInitializer - Triggering reconcile on all open documents
21:19:37.134 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.l.v.SpringProcessConnectorRemote - updating settings for remote processses to track - start
21:19:37.135 [Simple-Language-Server main thread] INFO o.s.i.v.b.j.l.v.SpringProcessConnectorRemote - updating settings for remote processses to track - done

[martinlippert]

That looks reasonably okay. What about the Error Log View entries?

[shubhamkundal]

This error is coming when I am trying to start eclipse, this logs are for that only, when trying to update the mevan project that time also error is coming but logs are not printed

[shubhamkundal]

this is when running application in debug mode

[shubhamkundal]

eclipse version is 2022-12

[shubhamkundal]

Below mentioned error is given for application, but all dependencies are added.

. ____ _ __ _ _
/\ / ' __ _ () __ __ _ \ \ \
( ( )__ | '_ | '| | ' / ` | \ \ \
\/ )| |)| | | | | || (| | ) ) ) )
' || .__|| ||| |_, | / / / /
=========||==============|/=////
:: Spring Boot :: (v3.1.8)

2024-01-31T22:36:15.358+05:30 INFO 6952 --- [ main] i.i.SpringBootOctTestAppApplication : Starting SpringBootOctTestAppApplication using Java 17.0.2 with PID 6952 (C:\Users\Admin\Desktop\SpringBoot\SpringBootOctTestApp\target\classes started by Admin in C:\Users\Admin\Desktop\SpringBoot\SpringBootOctTestApp)
2024-01-31T22:36:15.366+05:30 INFO 6952 --- [ main] i.i.SpringBootOctTestAppApplication : No active profile set, falling back to 1 default profile: "default"
2024-01-31T22:36:17.852+05:30 INFO 6952 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2024-01-31T22:36:17.874+05:30 INFO 6952 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2024-01-31T22:36:17.874+05:30 INFO 6952 --- [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.18]
2024-01-31T22:36:18.097+05:30 INFO 6952 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2024-01-31T22:36:18.100+05:30 INFO 6952 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2611 ms
2024-01-31T22:36:18.254+05:30 WARN 6952 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'employeeDaoImpl': Unsatisfied dependency expressed through field 'dataSource': Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception with message: Failed to determine a suitable driver class
2024-01-31T22:36:18.260+05:30 INFO 6952 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2024-01-31T22:36:18.296+05:30 INFO 6952 --- [ main] .s.b.a.l.ConditionEvaluationReportLogger :

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2024-01-31T22:36:18.342+05:30 ERROR 6952 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :

---

APPLICATION FAILED TO START

---

Description:

Failed to configure a DataSource: no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

Action:

Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

[BoykoAlex]

I sort of doubt that "send classpath notification" in the IDE has anything to do with the app failing to start... The classpath data is not sent from Eclipse to Boot language server. Don't think that app launching in Eclipse has anything to do with the Boot LS...

Can you run mvn spring-boot:run from the command line? Does this start your app normally?