Can’t deactive or uninstall a plugin

I’m getting warnings about the plugin Google Tag Manager, but when I try to deactivate it, I get this message “There has been a critical error on this website. Please check your site admin email inbox for instructions.” How do I get rid of this plugin?

• This topic was modified 2 years, 5 months ago by t-p. Reason: Moved to Fixing WordPress from Everything else WordPress

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