After recently upgrading our puppetmaster to 3.2.2 to mitigate a remote exploit. I ran into this error on all nodes

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Error: Could not retrieve catalog from remote server: Error 400 on SERVER: Could not autoload puppet/indirector/facts/active_record: no such file to load -- active_record
Warning: Not using cache on failed catalog
Error: Could not retrieve catalog; skipping run

So I’m guessing your using stored configs on your puppetmaster. Apparently this is now deprecated as it says at the top of this page.

So the answer is to install and migrate to PuppetDB