Well, I'd love to help but I don't fully understand your problem and that link totally doesn't have an actual installed forum on it.

Few things for thought, things get updated for compatibility because old code is removed/phased out from php when updated; hence why there ends up having to have to update for newer versions.

Also, 7.5.3 is insecure, you should be running the patch; people where hacked on a regular basis without the patch and it was filthy to clean up.

General thought, I'd upgrade regardless.

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