We are suddenly having issues with opening last saved project in TimeXtender. The error says:

An error occurred while fetching data from the database.
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.

Location: Table: SelectionRuleFields
ForeignKeyConstraint DataFields_SelectionRuleFields requires the child key values (5b2c48b9-abad-4a3b-a9b2-002fedfc582a) to exist in the parent table..

We have tried to go back to the project that we saved before the lastest one. We are able to open that it not able to save it. The errror says:

An error occurred while saving the project to the database.

An error occurred while fetching data from the database.
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.

Location: Table: SelectionRuleFields
ForeignKeyConstraint DataFields_SelectionRuleFields requires the child key values (5b2c48b9-abad-4a3b-a9b2-002fedfc582a) to exist in the parent table..