We got the a DDL parsing exception which stopped the connector (some of the names/values were changed due to sensitive information) - attached to the ticket.
Had to change connector's config property "database.history.skip.unparseable.ddl" to "true" and restart the connector as a workaround for this issue.
Debezium MySQL connector: 1.7.0.Final
Kafka Connect: 3.0.0
(Percona) MySQL Server: 5.7.34-37-log
Please let me know if more information is required.