Based on the Log this seems to be an error in your project, or maybe a Java version difference
E.g.:
Note: the configuration refers to the unknown class 'Object'
Maybe you meant the fully qualified name 'java.lang.Object'?
You can still follow this guide How to debug your build locally / "It works on my Mac/PC but not on bitrise.io" and e.g. do a clean git clone and see if you can build the project from there; as well as if you install docker (Docker for Windows) you can also run the build through Docker as described in the Download and use the Android/Linux environment section.