Can't open memory map file /dev/shm/zm.mmap.1: No such file or directory

[Kirill]

Hello! system Ubuntu 20.04.6 LTS and v1.36.33
system startup error:

Can't open memory map file /dev/shm/zm.mmap.1: No such file or directory

and

Monitor shm is not connected

sudo service zoneminder restart fixes it and everything works fine until the next computer restart

ls /dev/shm/

showed me some PostgreSQL files
I added to zoneminder.service file

After=network.target mysql.service postgresql.service

but it does not help please advise how to get rid of the conflict