Thank you very much for posting here @sootsnoot
I’ve looked at the error in your other post, which is coming from this file:
/var/www/wp-content/plugins/import-users-from-csv-with-meta/addons/melapress-login-security.php
The file melapress-login-security.php is the main file of our plugin, however, based on the above, it seems that our plugin is being added as an addon in the plugin Import and export users and customers.
We are not aware of such an integration or how this is being done. We have never worked with the developer of that plugin, although we’re always happy to look into that possibility. But for now, the best way forward to solve this is to work with the other plugin’s vendor.
If there are some problems with some integration they are doing, they can always get in touch directly with us.
Please let us know if you have any further questions.