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Hey there,
Yesterday i updated the website which included the latest version of wordpress also and we started to get errors with FluentSMTP.
“The FluentSMTP plugin depends on wp_mail pluggable function and plugin is not able to extend it. Please check if another plugin is using this and disable it for FluentSMTP to work!
Possible Conflict: /data/wordpress/wp-includes/pluggable.php:182”
I checked all the plugins and there basically isn’t any other smtp sending plugins as there hasn’t been for around 3 months (we switched to FluentSMTP then).
So disabling plugins wasn’t the case that helped. I also rollbacked the WordPress version and that didn’t help.
After that i noticed that Provider: Gmail/Google Workspace (Re Authentication Required) notice appeared on the account we are sending emails. After trying the re-authentication google error appears that says “Error 400: redirect_uri_mismatch” which is the one that was setup using this tutorial:
This basically:
Could the whole redirect_uri_mismatch bug be the thing that causes the other pluggable error? How should we go about fixing this?