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Java NullPointerException on opening documentation

2 Ansichten (letzte 30 Tage)
Tairan Li
Tairan Li am 29 Jan. 2021
Beantwortet: Anmol Dhiman am 31 Jan. 2021
Whenever I search the documentation or open a built-in function I get something like this:
java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:57)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:36)
at java.lang.reflect.Field.get(Field.java:393)
at sun.lwawt.macosx.CAccessibility.getAccessibleRoleFor(CAccessibility.java:248)
at sun.lwawt.macosx.CAccessibility$12.call(CAccessibility.java:263)
at sun.lwawt.macosx.CAccessibility$12.call(CAccessibility.java:260)
at sun.lwawt.macosx.LWCToolkit$CallableWrapper.run(LWCToolkit.java:597)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:301)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
at java.awt.EventQueue$4.run(EventQueue.java:733)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
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)
My matlab version is R2020a maci64, but I had this problem in older versions too.
The documentations can be opened normally, but the error log is quite annoying.

Antworten (1)

Anmol Dhiman
Anmol Dhiman am 31 Jan. 2021
Hi Tairan,
Refer to similar question on the same topic as errors seems to match.
Hope it helps

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