re-build manually: look at what I did in 2017 Defold’s (linux) project file, and re-create it in a new Defold release.
Let me explain the problems:
2017 -> 1.2.152 (Linux): I created this game using Defold (Linux) in 2017. When I tried to import the 2017 game into 1.2.152, it failed. I understand it. Defold in 2017 was very different then it’s in 2019. My workaround was to re-build my game manually in 1.2.152.
1.2.152 -> 1.2.154 (Linux): Now I needed to do the 64-bit. I was able to read the 1.2.152 project file in 1.2.154. The game ran properly on Linux screen. A 32/64-bit apk was created with project/bundle/android application. But, when I tested the apk on a 64-bit android phone, it crashed.
I suggest you select an existing Defold example with sufficient complexities, use a 2017 version Defold-Linux to create a project file. Then try to read that project file in 1.2.152(Linux). Maybe you will see the same problem. Once you fix that problem. You could try in 1.2.154(Linux) to read in the project file you created in 1.2.152. Then create a 32/64-bit apk with /project/bundle/android application, then test that apk on a 64-bit android phone, maybe it will crash like what happened to me.