CSV Export plugin 500 error

We are trying to use the CSV plugin (https://omeka.org/classic/plugins/CsvExport/) with our omeka installation. It seemed to work for a while, but it is now consistently failing with an http 500 error message when we ask for an export. I’ve looked through the omeka error logs, but I can’t find any data that seems connected to the error, so I’ve no idea what’s causing it. Is there anyone familiar with that plugin who has any ideas?

I don’t want to discourage responses here, but I also always like to counsel that for non-Omeka Team produced plugins can it be helpful to post an issue on the plugin’s github repo as well.

You can find an improved version of the plugin at https://github.com/Daniel-KM/Omeka-plugin-CSVExport
It might be worth a try, to see whether your problem is solved with that.