使用提出问题解答时报错，之后打开项目就提示报错。报错信息如下

java.lang.NullPointerException
at com.alibabacloud.intellij.cosy.chat.action.CosyCommitMessageGenerationAction.getDiff(CosyCommitMessageGenerationAction.java:166)
at com.alibabacloud.intellij.cosy.chat.action.CosyCommitMessageGenerationAction.lambda$update$0(CosyCommitMessageGenerationAction.java:112)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:776)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:746)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:969)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:839)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:449)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:797)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:448)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:781)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:502)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190)
at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235)
at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233)
at java.desktop/java.awt.Dialog.show(Dialog.java:1063)
at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:694)
at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:436)
at com.intellij.openapi.ui.DialogWrapper.doShow(DialogWrapper.java:1702)
at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1661)
at com.intellij.openapi.ui.DialogWrapper.showAndGet(DialogWrapper.java:1675)
at com.intellij.openapi.vcs.changes.ui.CommitChangeListDialog.activate(CommitChangeListDialog.java:266)
at com.intellij.vcs.commit.SingleChangeListCommitWorkflowHandler.activate(SingleChangeListCommitWorkflowHandler.kt:64)
at com.intellij.openapi.vcs.changes.ui.CommitChangeListDialog.commitChanges(CommitChangeListDialog.java:224)
at com.intellij.openapi.vcs.changes.ui.CommitChangeListDialog.commitChanges(CommitChangeListDialog.java:141)
at com.intellij.openapi.vcs.actions.AbstractCommonCheckinAction.performCheckIn(AbstractCommonCheckinAction.kt:129)
at com.intellij.openapi.vcs.actions.AbstractCommonCheckinAction$queueCheckin$1.run(AbstractCommonCheckinAction.kt:84)
at com.intellij.openapi.vcs.changes.InvokeAfterUpdateCallback$CallbackBase.invokeCallback(InvokeAfterUpdateCallback.java:66)
at com.intellij.openapi.vcs.changes.InvokeAfterUpdateCallback$ProgressCallback$ModalWaiter.onFinished(InvokeAfterUpdateCallback.java:165)
at com.intellij.openapi.progress.impl.CoreProgressManager.finishTask(CoreProgressManager.java:606)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.finishTask(ProgressManagerImpl.java:153)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcessWithProgressSynchronously$8(CoreProgressManager.java:562)
at com.intellij.openapi.application.impl.ApplicationImpl.invokeAndWait(ApplicationImpl.java:415)
at com.intellij.openapi.application.ex.ApplicationUtil.invokeAndWaitSomewhere(ApplicationUtil.java:145)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcessWithProgressSynchronously(CoreProgressManager.java:561)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:89)
at com.intellij.openapi.progress.impl.CoreProgressManager.runSynchronously(CoreProgressManager.java:409)
at com.intellij.openapi.progress.impl.CoreProgressManager.run(CoreProgressManager.java:394)
at com.intellij.openapi.progress.Task.queue(Task.java:107)
at com.intellij.openapi.vcs.changes.InvokeAfterUpdateCallback$ProgressCallback.startProgress(InvokeAfterUpdateCallback.java:127)
at com.intellij.openapi.vcs.changes.UpdateRequestsQueue.invokeAfterUpdate(UpdateRequestsQueue.java:169)
at com.intellij.openapi.vcs.changes.ChangeListManagerImpl.invokeAfterUpdate(ChangeListManagerImpl.java:368)
at com.intellij.openapi.vcs.changes.ChangeListManagerImpl.invokeAfterUpdate(ChangeListManagerImpl.java:356)
at com.intellij.openapi.vcs.changes.ChangeListManager.invokeAfterUpdateWithModal(ChangeListManager.java:64)
at com.intellij.openapi.vcs.actions.AbstractCommonCheckinAction.queueCheckin(AbstractCommonCheckinAction.kt:82)
at com.intellij.openapi.vcs.actions.AbstractCommonCheckinAction.actionPerformed(AbstractCommonCheckinAction.kt:73)
at com.intellij.openapi.vcs.actions.AbstractVcsAction.actionPerformed(AbstractVcsAction.java:39)
at com.intellij.openapi.actionSystem.ex.ActionUtil.lambda$performActionDumbAware$5(ActionUtil.java:273)
at com.intellij.util.SlowOperations.lambda$allowSlowOperations$0(SlowOperations.java:77)
at com.intellij.util.SlowOperations.allowSlowOperations(SlowOperations.java:64)
at com.intellij.util.SlowOperations.allowSlowOperations(SlowOperations.java:76)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:273)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed$0(ActionMenuItem.java:310)
at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:286)
at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:77)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:299)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed$0(ActionMenuItem.java:110)
at com.intellij.openapi.application.TransactionGuardImpl.performUserActivity(TransactionGuardImpl.java:95)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:110)
at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:515)
at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:545)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6652)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3345)
at java.desktop/java.awt.Component.processEvent(Component.java:6417)
at java.desktop/java.awt.Container.processEvent(Container.java:2263)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5027)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2784)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:969)
at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:906)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:836)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:449)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:808)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:448)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:781)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:502)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)