Issue Transitioning to Plesk for a client's website, first time user. Facing FastCGI errors.

[EthanElijah]

Hi, we've developed a WordPress site and want to install it on Plesk Onyx 17.5.3. I am able to install WordPress seamlessly through the default button, however, when I try to install plugins I get an error (see attachment.) Speed Test essay writer

Also the PHP settings aren't clickable (see attachment). Please let me know what I'm doing wrong and how to get the website up and running.

 

[IgorG]

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