AJAX 404 after Upgrade to TYPO3 8.7

I have two identical installations with regard to everything except for the TYPO3 Version. Both are fresh installs, so the databases should be normal.

In my extension, I make an AJAX call to a page that holds nothing but my plugin with the Content-type:application/html.

In TYPO3 v. 7.6.16, the Ajax response is successful.

In TYPO3 v. 8.7, the Ajax call fails with a 404: not found.

The urls are identical, apart from variation in the cHash.

Does anyone know why this is the case, and what I need to do to correct the situation?

链接地址: http://www.djcxy.com/p/48356.html

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