No such port directory in .postgresql about dokku-pg-plugin HOT 3 CLOSED

I had the same error and I could fix it by changing line 30 in the pre-deploy script from

PG_PORT="cat $DOKKU_ROOT/.postgresql/port_$APP"

to

PG_PORT=5432

After that deployment worked as expected again.
The error occurs when the docker container for postgresql has exited. In this case the script tries to get port information from the port_appname file which does not exist. However, I could not figure out when and where this file is supposed to be created by the plugin.

from dokku-pg-plugin.

Thanks @Mortymus For me, I manually created the file in the .postgresql directory and it worked.

from dokku-pg-plugin.

I created a fix for a similar issue. See this pull request.
#61
Does this fix your issue?

from dokku-pg-plugin.