I think that part of the logs explains it:
rabbit_1 | 2021-03-22 12:24:51.737 [info] <0.446.0> Free disk space is insufficient. Free bytes: 4862803968. Limit: 8365965312
rabbit_1 | 2021-03-22 12:24:51.737 [warning] <0.396.0> disk resource limit alarm set on node rabbit@localhost.
rabbit_1 |
rabbit_1 | **********************************************************
rabbit_1 | *** Publishers will be blocked until this alarm clears ***
rabbit_1 | **********************************************************
You need to provide more disk space to your VM.