Fix PHPSTAN issues in the 8.x-1.x branch

vinodhini.e → made their first commit to this issue’s fork.

danrod → changed the visibility of the branch 3544104-fix-phpstan-issues to hidden.

I was able to fix the PHPSTAN issue, but still we need to fix the test (Hope to do that later this week), for now I'll set this to "Needs Review".

Hope someone would review this, I'd appreciate it.

Thanks.

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