Solved
cant install bundle

I dont know why

I dont know why
My local AEM 6.3 has the bundle "com.adobe.cq.sightly.cq-wcm-sightly-extension" in the version 1.4.28; it exports the package "com.adobe.cq.sightly" in version 3.1.0.
If your built bundle demands a version range [2.5,3), it's built against a wrong version of the uber.jar; I also just checked the uber.jar and it has the very same version number 3.1.0 listed for this package.
Jörg
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