The Firefox browser refreshes and occasionally reports an error TypeError: e is null.

The

framework is built using the react framework. Accessing Firefox Refresh locally with localhost:8080 will not report an error, but this happens occasionally in the test environment after webpack is packaged. Other browsers are normal. Ask for help to provide a good solution.

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it is possible that the component has been unloaded, and the method that references the dom object within the component has not been released. This may be a problem within other components, or it may be a problem within your component

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