I'm not sure if this is the right channel, but there's mention of pgagent in the PgAdmin docs [1]. I have been trying to fix a customer's pgagent install, and this is the following information printed when starting up pgagent:
Notice that I could not find pgagent_upgrade.sql anywhere. I also looked in the PgAdmin repository, but could not find it:
```
$ find . -name "pgagent_upgrade.sql" $ git status On branch master Your branch is up to date with 'origin/master'.
nothing to commit, working tree clean
```
I also looked at the pgagent repository (git@github.com:postgres/pgagent.git), and could not find the file. Perhaps this log message is an artifact that needs to be removed?
FWIW, I managed to fix the customer's pgagent install by executing `ALTER EXTENSION "pgagent" UPDATE;`, as specified by pg_upgrade.