Can't edit anything in database

Hi, i can't edit any tables, names of columns, or even allow NULL and etc.

If i'm trying to allow NULL, I'm getting an error: ERROR: syntax error at or near "type of data" LINE 2: ALTER COLUMN "name of column" TIME NOT NULL

If i'm trying to edit data in a new line, the error is: 0 rows updated when that should have been 1.

This database is on Heroku

Looks like issue #595, which I intended to fix for the upcoming v10.3 release.