Domain Mapping database error

Error_log is saving a lot of database errors related to Domain Mapping:

[02-Jun-2018 16:26:33 UTC] WordPress database error Duplicate column name 'is_primary' for query ALTER TABLE wp_domain_mapping

[02-Jun-2018 16:26:33 UTC] WordPress database error Duplicate column name 'scheme' for query ALTER TABLE wp_domain_mapping ADD COLUMN scheme