Using UB-Migration tool, Migrating from Magento 1 to Magento 2. All steps were successful apart from Step 4 Categories which failed with below error, please assist.
Error received Research: I had googled and found that its caused by the source DB(magento 1) not the M2.
I checked table: catalog_category_entity
select * from catalog_category_entity WHERE parent_id is NOT null;
returned: 0 rows effected.
2020/12/10 09:42:15 [error] [ub_data_migration] CDbCommand failed to execute the SQL statement: SQLSTATE: Integrity constraint violation: 1048 Column 'parent_id' cannot be null. The SQL statement executed was: UPDATE `catalog_category_entity` SET `entity_id`=:yp0, `attribute_set_id`=:yp1, `parent_id`=:yp2, `created_at`=:yp3, `updated_at`=:yp4, `path`=:yp5, `position`=:yp6, `level`=:yp7, `children_count`=:yp8 WHERE `catalog_category_entity`.`entity_id`='1193'