java.net.MalformedURLException: no protocol:
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at org.kohsuke.stapler.Stapler$4.convert(Stapler.java:1083)
Caused: org.apache.commons.beanutils.ConversionException: no protocol:
at org.kohsuke.stapler.Stapler$4.convert(Stapler.java:1085)
at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:739)
at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:478)
at org.kohsuke.stapler.RequestImpl.instantiate(RequestImpl.java:777)
at org.kohsuke.stapler.RequestImpl.access$200(RequestImpl.java:83)
at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:678)
at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:478)
at org.kohsuke.stapler.RequestImpl.instantiate(RequestImpl.java:777)
at org.kohsuke.stapler.RequestImpl.access$200(RequestImpl.java:83)
at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:678)
at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:478)
at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:474)
at hudson.model.Descriptor.newInstance(Descriptor.java:591)
Caused: java.lang.Error: Failed to instantiate class org.jenkinsci.plugins.p4.PerforceScm from {"value":"4","stapler-class":"org.jenkinsci.plugins.p4.PerforceScm","$class":"org.jenkinsci.plugins.p4.PerforceScm","credential":"b2fbcadd-6321-4721-a658-902865f2a3fe","":["0","1","3"],"workspace":{"charset":"none","name":"jenkins-${NODE_NAME}-${JOB_NAME}","pinHost":false,"spec":{"allwrite":false,"clobber":true,"compress":false,"locked":false,"modtime":false,"rmdir":false,"streamName":"","line":"LOCAL","view":"org.jenkinsci.plugins.p4.workspace.ManualWorkspaceImpl","$class<span class="code-quote">":"org.jenkinsci.plugins.p4.workspace.ManualWorkspaceImpl"},"populate":{"have":false,"quiet":true,"pin":"","parallel":{"enable":false,"path":"/usr/local/bin/p4","threads":"4","minfiles":"1","minbytes":"1024"},"stapler-class<span class="code-quote">":"org.jenkinsci.plugins.p4.populate.ForceCleanImpl","$class<span class="code-quote">":"org.jenkinsci.plugins.p4.populate.ForceCleanImpl"},"browser":{"url":"","stapler-class<span class="code-quote">":"org.jenkinsci.plugins.p4.browsers.SwarmBrowser","$class<span class="code-quote">":"org.jenkinsci.plugins.p4.browsers.SwarmBrowser"}}
at hudson.model.Descriptor.newInstance(Descriptor.java:599)
at org.jenkinsci.plugins.p4.PerforceScm$DescriptorImpl.newInstance(PerforceScm.java:776)
at org.jenkinsci.plugins.p4.PerforceScm$DescriptorImpl.newInstance(PerforceScm.java:700)
at hudson.DescriptorExtensionList.newInstanceFromRadioList(DescriptorExtensionList.java:141)
at hudson.scm.SCMS.parseSCM(SCMS.java:59)
at hudson.model.AbstractProject.submit(AbstractProject.java:1881)
at hudson.model.Project.submit(Project.java:230)
at hudson.model.Job.doConfigSubmit(Job.java:1245)
at hudson.model.AbstractProject.doConfigSubmit(AbstractProject.java:797)
at java.lang.invoke.MethodHandle.invokeWithArguments(Unknown Source)
at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:343)
at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:52)
at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26)
at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:184)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:117)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:129)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:715)
Caused: javax.servlet.ServletException
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:765)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:845)
at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:715)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:845)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:126)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:49)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:553)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:499)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
The 'Repository Browser' setting is set to '(Auto)' by default. The plugin looks at the server's settings and looks for a Property `P4.Swarm.URL` if this is set then it assumes Swarm is installed. Perhaps check to see if the property is set:
As a workaround try choosing a browser and leaving the fields empty.