[RT] Error while creating a new Article

Hi, I'm trying to create a new Article to reply to users, but I'm getting this error when I click on Create:

    Could not add new custom field value: Couldn't create record: Internal Error: Couldn't execute the query 'INSERT INTO ObjectCustomFieldValues (ObjectType, Disabled, LastUpdatedBy, ContentType, CustomField, Content, LargeContent, Creator, LastUpdated, ContentEncoding, Created, ObjectId) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'ERROR: current transaction is aborted, commands ignored until end of transaction block