Attempting query: INSERT INTO vouchers (merchant_id,category_id,voucher_title,short_description,voucher_type,redeem_type,status,expiry_date,voucher_count,bux_value) VALUES ('13','6','Test Voucher','Test description','flat','both','published','2026-04-19','100','500')
ERROR: ERROR:  insert or update on table "vouchers" violates foreign key constraint "vouchers_merchant_id_foreign"
DETAIL:  Key (merchant_id)=(13) is not present in table "merchants".