project stopped producing android apk file for no reason

I have a project for which I suddenly find it won’t produce the apk file for android. The thing is, it DID produce a couple earlier tonight but I can’t think of anything I did to cause it to stop. When I go through a build now I only get an .aab file and a .symbols file. Absolutely the only thing I think is different is that I changed the build number because Google Developer console was refusing to accept the apks did manage to generate tonight.I tried changing the project over to a Windows 10 build, doing a Windows 10 build, and then switching back to android. I tried restarting Unity,I tried rebooting the system. When it asks you to select the build location, is there some specific “thing” you type in? It defaults to the Build directory under your project directory and starts with a blank 1st part of a filename and with a aab extension. I’ve tried putting in different names and changing from .aab to “all files”. The builds are completing successfully. And I DID get two apk files. I recall that for one of them I had indeed incremented up the bundle number, I got an apk, but then the Google Developer console claimed that I was still using an already-used bundle number. So…that looked like when I generated that apk that even though I had changed the bundle number that it didn’t “take” in the actual build. Any suggestions? I’m having to go through this because Google is forcing me to add/include a 64 bit build.

This SO question should help to understand the difference between an apk and an aab file

Thanks Bunny. I didn’t know what an .aab file was. If I HAD known then that would the clue to understand what had happened. The fact that Unity wanted me to name .aab file shows that it thought it was generating a bundle and not an apk. I think at some point I saw the “Generate app bundle (Play Store)” checkbox was available and tried clicking it on (and didn’t impress on my memory that I had changed what I was doing). My experience with android has been with apk’s. Bundles snuck their way into existence whilst I was away working on Unity projects. @username