报错误了。求解
老师报这个错误是怎么回事：Warning: setState(...): Can only update a mounted or mounting component. This usually means you called setState() on an unmounted component. This is a no-op. Please check the code for the Player component.
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老师报这个错误是怎么回事：Warning: setState(...): Can only update a mounted or mounting component. This usually means you called setState() on an unmounted component. This is a no-op. Please check the code for the Player component.
2018-03-23
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