System is no longer booting (ODROID N2+)

Asking for a help. System is no longer booting.
it looks like it is trying to boot, crashing, then booting again and after few attempts it hangs.
During one of the boots I could make couple of pictures from the screen.
Having limited in depth knowledge about OS, still something gives me a “feeling” that there is no disk space left. Could you please have a look on the screenshot and validate my “feeling”?
and if this is a right feeling, how to get it cleaned?

It is a system based on ODROID N2+ 4GB + 64Gb EMMC