The webservice interface returns an exception soapenv: Server.userException, and no exception is found in the background catch

The webservice interface returns an exception soapenv: Server.userException, and no exception is found in the background catch

I made a webservice interface. During the test, the local is normal, but after deploying to the site, the error is reported as follows:

The background does not catch any exceptions.

After inspection, it should be that a certain class in the background is missing or has a serious error. In this case, an error is returned directly, and the catch is not abnormal.

After replacing the whole package, the problem is solved.

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