Error solution with REST API “The response is not a valid JSON response” WordPress+Nginx

Once I installed WordPress on an Ubuntu Server operating system with a Nginx web server and when I tried to add a new article I saw an error:

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Solving the Phabricator HTTP Error 500: Error 1: ** unknown exception encountered, please report by visiting

Once I installed Phabricator and running hg clone over https, I noticed the following error:

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How to see hidden files on macOS

Once, a friend gave me a flash drive with documents that he wrote down on a MacBook and I connected it to a computer with a Windows operating system and it turned out that the flash drive contained a lot of other information that my friend deleted on MacOS but didn’t empty the trash, and in this case the files simply moved to a hidden folder.
Therefore, it is sometimes useful to see hidden files on MacOS.

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