IDEA报Unable to save settings: Failed to save settings. Please restart IntelliJ IDEA

IDEA报Unable to save settings: Failed to save settings. Please restart IntelliJ IDEA
网上说的解决方案是卸载一个“identifier Highlighter”插件，可是个人IDEA没有这个插件。
通过谷歌终于发现解决方案。

解决方案

首先确保对config文件有读写权限

若是权限没问题，仍是报错的话，那就作下一步。

查看log文件

找到出错缘由，这里可能每一个人的缘由都不一样。所以，解决方案也不一样。

2017-11-15 17:20:55,720 [ 196716]   WARN - mponents.impl.stores.StoreUtil - Save settings failed 
java.lang.RuntimeException: java.lang.Exception: Cannot get RunManager component state
    at com.intellij.util.ExceptionUtil.rethrow(ExceptionUtil.java:179)
    at com.intellij.util.lang.CompoundRuntimeException.throwIfNotEmpty(CompoundRuntimeException.java:148)
    at com.intellij.configurationStore.ComponentStoreImpl.save(ComponentStoreImpl.kt:199)
    at com.intellij.openapi.components.impl.stores.StoreUtil.save(StoreUtil.java:49)
    at com.intellij.openapi.project.impl.ProjectImpl.save(ProjectImpl.java:349)
    at com.intellij.openapi.components.impl.stores.StoreUtil.saveDocumentsAndProjectsAndApp(StoreUtil.java:126)
    at com.intellij.openapi.application.impl.ApplicationImpl.saveAll(ApplicationImpl.java:1437)
    at com.intellij.ide.SaveAndSyncHandlerImpl.saveProjectsAndDocuments(SaveAndSyncHandlerImpl.java:126)
    at com.intellij.ide.SaveAndSyncHandlerImpl$2.a(SaveAndSyncHandlerImpl.java:94)
    at com.intellij.openapi.application.TransactionGuardImpl.a(TransactionGuardImpl.java:86)
    at com.intellij.openapi.application.TransactionGuardImpl.a(TransactionGuardImpl.java:109)
    at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:118)
    at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:122)
    at com.intellij.ide.SaveAndSyncHandlerImpl$2.onFrameDeactivated(SaveAndSyncHandlerImpl.java:92)
    at com.intellij.ide.FrameStateManagerImpl.a(FrameStateManagerImpl.java:84)
    at com.intellij.ide.FrameStateManagerImpl.access$500(FrameStateManagerImpl.java:32)
    at com.intellij.ide.FrameStateManagerImpl$2.a(FrameStateManagerImpl.java:70)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:246)
    at com.intellij.util.Alarm$Request.runSafely(Alarm.java:417)
    at com.intellij.util.Alarm$Request.access$700(Alarm.java:344)
    at com.intellij.util.Alarm$Request$1.run(Alarm.java:384)
    at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:314)
    at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:416)
    at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:399)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:762)
    at java.awt.EventQueue.access$500(EventQueue.java:98)
    at java.awt.EventQueue$3.run(EventQueue.java:715)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:732)
    at com.intellij.ide.IdeEventQueue.c(IdeEventQueue.java:821)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:649)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:365)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.Exception: Cannot get RunManager component state
    at com.intellij.configurationStore.ComponentStoreImpl.save(ComponentStoreImpl.kt:166)
    ... 38 more
Caused by: java.lang.RuntimeException: Cannot save scheme workspace/Jetty Server: jetty (level: WORKSPACE)
    at com.intellij.configurationStore.SchemeManagerImpl.save(SchemeManagerImpl.kt:535)
    at com.intellij.configurationStore.Scheme_implKt.save(scheme-impl.kt:154)
    at com.intellij.execution.impl.RunManagerImpl.getState(RunManagerImpl.kt:500)
    at com.intellij.execution.impl.RunManagerImpl.getState(RunManagerImpl.kt:63)
    at com.intellij.configurationStore.ComponentStoreImpl.a(ComponentStoreImpl.kt:227)
    at com.intellij.configurationStore.ComponentStoreImpl.save(ComponentStoreImpl.kt:159)
    ... 38 more

我发现了这一句:
Caused by: java.lang.RuntimeException: Cannot save scheme workspace/Jetty Server: jetty (level: WORKSPACE)

是我jetty配置问题，由于我用不到jetty，因此暂时删除了jetty相关的配置。

问题解决，烦人的提示不会再出来了。