Hi, I have the same issue.
I used the plugin without any problems a couple of weeks ago and then deactivated it. But today I wanted to try something and activated it again. I also updated to the latest version. However, now the I get the error that the op mentions.
I am not even sure how is one supposed to add multiple same filters. When I load the site I can see that a table is created, but after a split second it vanishes and I get the mentioned error (reproducible with refresh without cache as well).
https://wordpress-564771-1820819.cloudwaysapps.com/shop/
EDIT:
I have in fact added information on each product regarding their variation products. Is it possible that this causes the error?
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This reply was modified 3 years, 10 months ago by bonobo1.
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This reply was modified 3 years, 10 months ago by bonobo1.