I have a Qt-Qml application that i've built and packed on Ubuntu 20.04.2 using appimage-builder. I tried to deploy it to a Debian 10.8.0 virtual machine. When I try and run the .AppImage it is waiting for a couple seconds and then stopping with no output. If i run from extracted AppRun, it will give a segmentation fault. I've run AppRun with strace and i saw many dependency issues. I shared the output of strace ./AppRun 2>&1 | grep openat | grep \\.so below maybe it helps.
I don't know what to do next. I made sure each library which strace outputted is in the AppDir under /usr/lib/x86_64-linux-gnu/. I cannot share the output here because of the character limit. Here's a link to it. Thanks in advance.
Be aware Ubuntu 20 is based on Debian 11. So you compiled with newer kernel and libraries than what you have at runtime. This almost certainly leads to problems.
You may want to compile on Ubuntu 18 (which is based on Debian 10), then run on Ubuntu 20. This more likely contains compatible changes than the way you tried.