Help with login action or Library item

I need some help.
I am having an issue with my Node site. With this new project, I used a library item ( i think) to grab user details after logging in. This morning everything worked great, then I installed 5.3.1. Maybe it was a coincidence, but when I try to login in locally or in production I get an error in the user details query. Problem is, I don’t know how to take that server action out of every page that loads. I can’t even load the login page. I deleted everything in the library folder. My issue is not the error, but how do I remove this server action from running on every page?

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