Today I deleted UBO as usual, it was version 1.60.0. But the new version 1.61.0 refused to install in Chromium (Ungoogled). It turned out that the support for Manifest V2 is gradually fading away. The transition to V3 is underway.
Therefore, gentlemen, be careful when deleting the current version of the extension. Otherwise, it is quite possible that you, like me , will have to roll back to the previous one with terrible swear words rattling in the room
It's unworthy of a real gentleman, but it turned out the way it did
Alternatively, you can use uBO Lite, which is based on MV3. Find it yourself on Github or somewhere else - I'm too lazy to even give a link