Question Internal Server Error: Expected array value, but given: NULL

[Mombassa]

Server operating system version

Ubuntu 24.04.1 LTS

Plesk version and microupdate number

plesk-18065-mu2

Hi, looking for help, just swiched over to a vps, installed Ubuntu 24.04, plesk, then wordpress and woocommerce. Now I am getting the above message and cannot access wordpress. Checked the plesk log files and found these with several repeats of the same error. Tried removing plugins and get above message. I have reinstalled the bare image and reinstalled the programs multiple times with the same errors. Does anyone have any ideas?

2024-12-04 11:45:17	ERR	extension/wp-toolkit [64208:675040c8bd227]	Internal Server Error: Expected array value, but given: NULL
2024-12-04 11:45:17	ERR	extension/wp-toolkit [64208:675040c8bd227]	Unable to deactivate plugin 'contact-form-7' with version '6.0.1' in WordPress installation #1 ('https://www.southshieldsauctions.co.uk'). Reason: Expected array value, but given: NULL Show less
2024-12-04 11:45:17	ERR	extension/wp-toolkit [64208:675040c8bd227]	An error has occurred when decoding JSON by Zend_Json: Illegal Token
2024-12-04 11:45:16	ERR	extension/wp-toolkit [64208:675040c8bd227]	An error has occurred when decoding JSON by Zend_Json: Illegal Token
2024-12-04 11:45:15	ERR	extension/wp-toolkit [64208:675040c8bd227]	An error has occurred when decoding JSON by Zend_Json: Illegal Token
2024-12-04 11:44:25	ERR	extension/wp-toolkit [64008:675040954d519]	Internal Server Error: Expected array value, but given: NULL

 

[scsa20]

Have you tried enabling debug mode to get more information to show up? Tried removing custom themes and having it just use the default theme? Disabled all plugins? Changed PHP versions?

 

[Mombassa]

Managed to sort it, it was a plugin which was bundled with the woo commerce installation called WP Super cache. Once I did a basic installation of Woo commerce with no extras it worked fine, then just installed the plugins one by one.