High score solving: about 500 exceptions returned by the server

It is a strange problem to solve the resolution of the 500 error returned by the server. I am working on a website and iwebmall secondary development. I don't know why after the local test is completed, when uploading data to the server, there will always be a 500 error. Google prompts: 'http error 500 (InternalServerError): The server encountered an unexpected situation when trying to execute the request. High score resolution error 500 returned by the server
To solve a very strange problem, I am working on a website and iwebmall secondary development. I don't know why the 500 error will always occur when uploading data to the server after the local test is completed. Google prompts: 'http Error 500 (Internal Server Error): The Server encountered an exception when trying to execute the request. '. However, the error disappears after two or three minutes, and the website can be accessed normally. I use the winscp ftp upload tool. Is there a problem with the server or my code? I have tried the 500 error locally. after adding a 500 error, I used html and php to mix and use html comments, however, this was an unintentional pilot two or three weeks ago.

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Resource problems? How about the website stress test?
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The local environment and the server environment must be different. it should be caused by environment errors.
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How can I modify it?
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It seems that there will not be too many restrictions on writing in the future.