Error message since last update

Hi,
since the recent update (v4.8.7), I get to see the following line on every frontend page of my website:

Warning: implode(): Invalid arguments passed in /xxxxxx/wp-content/plugins/wp-slimstat/wp-slimstat.php on line 1332

I read some other threads about recent errors already and I can tell you that I do not use the plugin “Theme My Login”.

I also realized that all my embedded Vimeo videos don’t show up anymore (there’s an error message instead), but I assume that it’s not related to the Slimstat error as the issue remains after deactivating Slimstat. But who knows… So I better also tell you. ??
Thanks a lot in advance!
Love this plugin, love your work. ??

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