Well, I also had errors logged in error.log caused by TapaTalk, but made to look like they come from other mod (namely VaultWiki). I opened thread there:
https://www.vaultwiki.org/issues/4091/
I was getting double posts, not just errors in error.log. It started immediately after I installed latest TapaTalk (5.3.1) and I downgraded to (5.2.2) after that. I don't get double posts and this error in error.log, so it definitely is something TapaTalk related.
That's the reason I believe it's not something caused with VaultWiki.
I'm writing this just so you know it maybe isn't related with your mod, but can be caused with TapaTalk, although it looks like your mod causes this.