ERROR: relation with OID 0 does not exist

[mecampbellsoup]

Whenever I use Postgres' \ir to import my pipelinedb SQL script(s), errors like this show up:

2019-03-20 17:50:14.701 EDT [11573] lusca@lusca ERROR:  relation with OID 0 does not exist
2019-03-20 17:50:14.701 EDT [11573] lusca@lusca STATEMENT:  DROP TRIGGER process_response_trg ON lusca.responses;
2019-03-20 17:50:14.707 EDT [11573] lusca@lusca ERROR:  could not open relation with OID 0
2019-03-20 17:50:14.707 EDT [11573] lusca@lusca STATEMENT:  DROP VIEW lusca.http_fetch;
2019-03-20 17:50:14.707 EDT [11573] lusca@lusca ERROR:  could not open relation with OID 0
2019-03-20 17:50:14.707 EDT [11573] lusca@lusca STATEMENT:  DROP VIEW lusca.http_fetch;

However, if i just read the script directly e.g. psql < pipelinedb.sql then these errors don't occur.

Any clue why this might be happening? I'd like to \ir pipelinedb.sql in my main.sql file so that I have one entrypoint to a collection of files, but it's not a huge deal since I can always just move everything from pipelinedb.sql to main.sql.