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Won't run: Unable to determine mode of operation. To use npm mode, ensure 'flow-build-info.json' exists on the classpath #19

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fschon opened this issue Sep 24, 2019 · 0 comments
Open

Won't run: Unable to determine mode of operation. To use npm mode, ensure 'flow-build-info.json' exists on the classpath #19

fschon opened this issue Sep 24, 2019 · 0 comments

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@fschon
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fschon commented Sep 24, 2019

I tried to compile and run the project and get the following exception:

HTTP ERROR 500
Problem accessing /. Reason:

Server Error

Caused by:
javax.servlet.ServletException: javax.servlet.ServletException: com.vaadin.flow.server.startup.ServletDeployer@a1f5568f==com.vaadin.flow.server.VaadinServlet,jsp=null,order=-1,inst=false,async=true
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:502)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: javax.servlet.ServletException: com.vaadin.flow.server.startup.ServletDeployer@a1f5568f==com.vaadin.flow.server.VaadinServlet,jsp=null,order=-1,inst=false,async=true
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:692)
at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:520)
at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:811)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:537)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1701)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1668)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
... 10 more
Caused by: java.lang.IllegalStateException: Unable to determine mode of operation. To use npm mode, ensure 'flow-build-info.json' exists on the classpath. With Maven, this is handled by the 'prepare-frontend' goal. To use compatibility mode, add the 'flow-server-compatibility-mode' dependency. If using Vaadin with Spring Boot, instead set the property 'vaadin.compatibilityMode' to 'true' in 'application.properties'.
at com.vaadin.flow.server.DefaultDeploymentConfiguration.checkCompatibilityMode(DefaultDeploymentConfiguration.java:270)
at com.vaadin.flow.server.DefaultDeploymentConfiguration.(DefaultDeploymentConfiguration.java:125)
at com.vaadin.flow.server.VaadinServlet.createDeploymentConfiguration(VaadinServlet.java:166)
at com.vaadin.flow.server.VaadinServlet.createDeploymentConfiguration(VaadinServlet.java:151)
at com.vaadin.flow.server.VaadinServlet.createServletService(VaadinServlet.java:185)
at com.vaadin.flow.server.VaadinServlet.init(VaadinServlet.java:72)
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:671)
... 28 more
Caused by:
javax.servlet.ServletException: com.vaadin.flow.server.startup.ServletDeployer@a1f5568f==com.vaadin.flow.server.VaadinServlet,jsp=null,order=-1,inst=false,async=true
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:692)
at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:520)
at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:811)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:537)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1701)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1668)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:502)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.IllegalStateException: Unable to determine mode of operation. To use npm mode, ensure 'flow-build-info.json' exists on the classpath. With Maven, this is handled by the 'prepare-frontend' goal. To use compatibility mode, add the 'flow-server-compatibility-mode' dependency. If using Vaadin with Spring Boot, instead set the property 'vaadin.compatibilityMode' to 'true' in 'application.properties'.
at com.vaadin.flow.server.DefaultDeploymentConfiguration.checkCompatibilityMode(DefaultDeploymentConfiguration.java:270)
at com.vaadin.flow.server.DefaultDeploymentConfiguration.(DefaultDeploymentConfiguration.java:125)
at com.vaadin.flow.server.VaadinServlet.createDeploymentConfiguration(VaadinServlet.java:166)
at com.vaadin.flow.server.VaadinServlet.createDeploymentConfiguration(VaadinServlet.java:151)
at com.vaadin.flow.server.VaadinServlet.createServletService(VaadinServlet.java:185)
at com.vaadin.flow.server.VaadinServlet.init(VaadinServlet.java:72)
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:671)
... 28 more
Caused by:
java.lang.IllegalStateException: Unable to determine mode of operation. To use npm mode, ensure 'flow-build-info.json' exists on the classpath. With Maven, this is handled by the 'prepare-frontend' goal. To use compatibility mode, add the 'flow-server-compatibility-mode' dependency. If using Vaadin with Spring Boot, instead set the property 'vaadin.compatibilityMode' to 'true' in 'application.properties'.
at com.vaadin.flow.server.DefaultDeploymentConfiguration.checkCompatibilityMode(DefaultDeploymentConfiguration.java:270)
at com.vaadin.flow.server.DefaultDeploymentConfiguration.(DefaultDeploymentConfiguration.java:125)
at com.vaadin.flow.server.VaadinServlet.createDeploymentConfiguration(VaadinServlet.java:166)
at com.vaadin.flow.server.VaadinServlet.createDeploymentConfiguration(VaadinServlet.java:151)
at com.vaadin.flow.server.VaadinServlet.createServletService(VaadinServlet.java:185)
at com.vaadin.flow.server.VaadinServlet.init(VaadinServlet.java:72)
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:671)
at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:520)
at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:811)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:537)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1701)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1668)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:502)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.base/java.lang.Thread.run(Thread.java:834)
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