A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/home.php

Line Number: 124

An Error Was Encountered

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 3

select org.organization, org.abbr from tblOrganizations org where abbr IN (select substr(identifier, 3, 4) from tblDocuments where doc_id = )