Hi @pieter_scherrenberg,
Sorry to hear about the problem you are having.
I don’t see any reference to the theme in your shared error log.
The theme is working fine with the latest version of WordPress and we are using it on our websites without any issue.
Please make sure that you are using the below latest version of the theme.
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Also, this can be due to plugin conflict on your site so please try temporarily deactivating all plugins except Unyson, Redux framework and WpBakery page builder plugins and see whether everything works fine and then enable the plugins one by one to see which plugin is conflicting if any.
Best regards,
Shufflehound team