Wrong error thrown when snapshot.custom_class=custom and no snapshot.custom.class

Connector configuration is not valid. The 'snapshot.custom.class' value is invalid: snapshot.custom_class cannot be empty when snapshot.mode 'custom' is defined

java.lang.NullPointerException: Cannot invoke "String.isEmpty()" because the return value of "io.debezium.config.Configuration.getString(io.debezium.config.Field)" is null