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please use a single thread for your messages As for the error:

Incompatible because this component declares a component, with the library elements 'aar' and the consumer needed a component, packaged as a jar

your library is publishing an

aar

instead of a

jar

, so gradle can't resolve the dependency. If you do expect the

aar

, you should add

@aar

to your dependency coordinates: e.g.,

io.github.excu101:FOS:1.2.1@aar

That would be majorly different though, because then you do not get any dependencies, but only that specific

aar

artifact. So if that would be the solution, it would be better to change the library elements attribute that is requested to be

aar

instead of

jar

, not requesting a specific artifact. But as he said he didn't change anything and it worked, then stopped working, neither seems the correct solution. But it sounds unlikely that this suddenly happens, unless that dependency was released in that time in an incompatible way and a dynamic version is used.