ARM64 Releases
There is only arm64 now. There's no 32 bit arm.
I confirm what @tnt77 says, I updated TRACCAR from version 5.12 to 6.1 on my 32-bit Rpi OS and it stopped working, it would have been useful to know that it is now only available for arm64.
I changed the OS to the 64-bit version and TRACCAR worked again.
Since version 6.0, there is no longer the arm64 release, only arm. After some investigation, it seems to me that the ARM32 release was actually abandoned, and the arm release is in practice arm64. I suggest keeping using the name arm64 to be clear, just as it is used in Windows and Linux releases.