42703
what this Postgres error means
How it shows up
column "<column>" does not exist
What it means
SQLSTATE 42703 is undefined_column: the query names a column that the table does not have.
The usual cause in an AI-built app
The AI renamed a field in the app code, for example from name to full_name, but the table in the database still has the old column, or the other way around.
Check this first
Compare the column name in the error with the table's columns in the Supabase Table Editor, keeping in mind that names with capital letters must match exactly.