@Barrgi Hi, I meant "Opera deveroper" and I don't mean the version of F.B purity.
I understand the update is not done since January.
And I use this with ublock origin. so far I don't see any ad.
(Quote)no doubt it works to some extent (i.e. it blocks posts from groups and pages you don't follow)

It's what matters to me. I'm also ordinary user so I don't know better.

I installed today for the first time, Version
38.4.0.0 On Opera (developer) version 135.0.5960.0 and it's working great.

As well, I didn't get other errors with this way though I tried the way @nefastseven and @mantapp are tought us here, and as for today, the version of ublock is 1.72.3.103 through github, 1.72.2 here. (Many thanks for you guys)

Hi Greeting. I also get that annoying notification with Opera Developer version 135.0.5960.0, Every time it relaunches. I ended up every time delete uBlock Origin and reinstall, by bookmarking this page. Still worth the trouble! Thank you for the amazing app. I also use ublock DNS.