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Invalid Command ProxyErrorOverride

How to solve a problem with ProxyErrorOverride not being recognized.


Edited: 2019-12-07 02:26

ProxyErrorOverride, Apache mod proxy_http

After installing Apache and trying to start the server, you get an error telling you that ProxyErrorOverride is not a valid command.

A likely cause for this problem is that proxy_http is not enabled.

Reading the status for apache2.service:

Invalid command 'ProxyErrorOverride', perhaps misspelled


Enable the proxy_http module by typing the following command:

sudo a2enmod proxy_http