I was able to find out the issue and come up with a solution.
One of the plugins I was using (Social Sharing), was injecting the "receiver" tag without declaring the "android:exported" attribute into the Android manifest file.
To solve the issue, I downloaded the Git plugin referenced and edited the xml to add the "android:exported" attribute. Then I cloned the module and referenced the edited plugin, now have my own version that works for MABS 8.0.