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Upgraded ubuntu to PHP 7.4.3 now errors

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Hello, I have sudo apt upgraded my Ubuntu today and saw that it upgraded my PHP to version 7.4.3 while doing so. And now my forums are getting a bunch of errors with the autoloader etc...

Is there any way to fix this easily or do I need to wait for an update?

One of the errors is as follows:
"ErrorException: Class IPS\Xml\DOMDocument could not be loaded. Ensure it has been properly prefixed with an underscore and is in the correct namespace. (256)
#0 [internal function]: IPS\IPS::errorHandler()"

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It sounds like your server no longer meets the minimum requirements for Invision Community.

The DomDocument extension is enabled by default (and is perhaps missing from your PHP 7.4 build) and is required to run a lot of PHP based software. Please run our requirement checker to see if anything else is missing


If that doesn't show anything missing, I would next suggest re-uploading a copy of Invision Community, overwriting your existing files.

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