Trying to import from the addon to find best in bags.
Thanks for the snapshot – I was able to reproduce your error.
I tested it on our latest development build and the error no longer happens, so it should be fixed when we do the site update this coming Tuesday for 11.2. Unfortunately we cannot do an update before that because we are buried in a ton of changes for the patch.
The error seems to be related to an edge case with the sentinel capstone talent Lunar Storm. (Many hunter talents were changed and updated with 11.2 which is why the error probably stopped happening in our latest builds.)
In the meantime, you could temporarily deactivate that talent (in your case it should not significantly change the chosen gear in the optimized solution), or use the Mythic+ instead of Raid strategy, which is more AoE-focused.
Those are admittedly not perfect workarounds, but it will at least get you around the error until this coming Tuesday.
Thanks for the quick reply, switched the M+ strategy and it works once again.
Thank you.