Erlang Cowboy crashing. How to change logging levels?

I am running an Erlang Cowboy server and it strangely crashes sometimes with the error message:

> heart: Thu Dec 23 08:31:33 2021: Erlang has closed.heart: Thu Dec 23 08:31:33 2021: Would reboot. Terminating.gmake: *** [erlang.mk:7564: run] Killed

Lines 7564 in erlang.mk is

7563 run:: all7564 $(verbose) $(RELX_OUTPUT_DIR)/$(RELX_REL_NAME)/bin/$(RELX_REL_NAME)$(RELX_REL_EXT) $(RELX_REL_CMD)

I am unable to figure out why it is crashing because I can find no logs.

The logs on the date of the crash are completely empty.