I have not fully tested it, but I appear to have been able to fix my local copy by modifying the following file: /usr/local/cpanel/base/3rdparty/phpPgAdmin/classes/database/Postgres.php In the getSequence() function I modified this $sql variable: $sql = " SELECT c.relname AS seqname, s.*, m.seqstart AS start_value, m.seqincrement AS increment_by, m.seqmax AS max_value, m.seqmin AS min_value, m.seqcache AS cache_value, m.seqcycle AS is_cycled, pg_catalog.obj_description(m.seqrelid, 'pg_class') AS...
I'm having the same issue. PostgreSQL 8.4.20 phpPgAdmin 5.6 (PHP 7.3.6) Works fine in phpPgAdmin 5.1 (PHP 7.2.7)