editor plugin not function properly for wordpress website behind nginx reverse proxy server

Question

I have one server running apache with wordpress installed. This server is behind another nginx reverse proxy. Everything seems normal. However, when I login admin portal and try to add a new page using the editor (this editor is not default wordpress editor but the theme editor), I got the error: Updating failed. The response is not a valid JSON response.

I check the site health by Tools -> Site Health and found that The REST API encountered unexpect result（The REST API is one way WordPress, and other applications, communicate with the server. One example is the block editor screen, which relies on this to display, and save, your posts and pages.）.

Could anyone help to solve this problem?

Thanks a lot,

Peter

Answer 1

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