Errors when Activating Free Bertha Plugin

I tried to add the Bertha plugin to two different websites (One was Divi and the other was Kadence.) I got an error on both of them. I could add the plugin but then when I activated it, I got PHP errors and the white screen.

I have the whole errors, but I don’t want to enter all that publicly. Here’s how they start:

Warning: Attempt to read property “bertha_plugin_type” on null in

Warning: Cannot modify header information – headers already sent by (output started at

Warning: Attempt to read property “free_templates” on null in

Can someone please help? I’d love to try it out. I’m sure I’ll end up being a pro user.