Sometimes when you flash a custom ROM through Recovery on S10e you ended up stuck on boot screen logo. This happens because the firmware needed to be upgraded, there is a tutorial maded by LineageOS team teaching how to do that and it works perfect with e/os too. This happens on my phone and i fixed by upgrading the firmware.
Here is the link if anyone get stuck on the process:
https://wiki.lineageos.org/devices/beyond0lte/fw_update