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Dears I have a problem with the mediawiki version 1.35.2. Its installed on CENTOS 7 with mysql server. The Startup work fine, but when an user create a new post, the system report a bellow error:

“It appears that your browser does not support Unicode. It is required to edit pages, so your edit was not saved.”

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  • What browser are you using?
    – harrymc
    Commented May 2, 2021 at 19:49
  • I used chrome 90.0.4430.93 and Microsoft Edge 90.0.818.51. Commented May 2, 2021 at 21:25

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The edit page of MediaWiki sends a Unicode test-string to the server and compares it with an internal constant. So two options: Either the HTTP request actually contains a wrong string, or the PHP server has an issue.

Sometimes this happens if you have some proxy or process in-between that mangles Unicode characters.

It's also possible that pages are being served with a wrong content-type header. Check your php error log for "Headers already sent" error messages. Check to ensure that the pages are really served with the header of Content-Type: text/html; charset=UTF-8.

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  • I not have proxy in environment. I have the enveroments below, in direfent hosts. 1) Virtualbox with local bridge network and virtualhost connected to 8080 port; 2) VirtualBox with host-only network and virtualhost connected to 8080 port. I will look for error in logs, but not find the string “headers” there. Are There other log file for php in httpd? Commented May 4, 2021 at 13:13
  • Content-Type is one type of header that you should be looking for. For PHP logging, see for example this link.
    – harrymc
    Commented May 4, 2021 at 13:19
  • I look for this, but not find too. $cat /var/log/httpd/error_log |grep -i content I am astonished. Is unusual the user input code on stable version. Commented May 4, 2021 at 13:40
  • Post online the file if you like, but check first that it's turned on and the error level.
    – harrymc
    Commented May 4, 2021 at 14:29

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