“server closed the connection unexpectedly”

The query:

SELECT schemaname, tablename
FROM pg_tables
WHERE tableowner IN (E'njvue5kiy1c') OR schemaname='public';

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The error:

DBD::Pg::db selectall_arrayref failed: server closed the connection
unexpectedly
This probably means the server terminated abnormally
before or while processing the request.

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It happens every time. The “njvue5kiy1c” is a random generated name.

Does anyone know what may be causing this?

-Felipe Gasper
Houston, TX