I am getting the following Error in my logs since updating an application to Mendix 7.0.2.
Connector
An error has occurred while handling the request. [User 'xxxxxxxx' with session id '8cf7440d-2034-49a2-8fbb-f69c0f6b7c1c' and roles 'SelfServiceTraining, TrainingAdmin, Requester, User, SelfServiceRole, SelfServiceForms, InventoryManagement']
com.mendix.webui.WebUIException: No read only change hash found, while read only values are changed for object with id '124411939706127653'.
at com.mendix.webui.requesthandling.HashUtil$.verifyHash(HashUtil.scala:22)
Does anyone know what this error means and what might be causing it? This seems to occur in a user action that generates a PDF and emails it to an email address.
Edit: The user action performs the following actions:
- Creates a PDF file from a report template
- Creates an 'Email' entity record (specialization of System.FileDocument)
- Uses CommunityCommons DuplicateFileDocument to copy generated PDF to the Email record
- Opens the SendEmail form (Email entity created above) to select contact records to send to, and amend the message
- On clicking the Send (save) button, sets a boolean to trigger sending email and commits
None of the entites have any calculated attributes and all are persistent entities. I cannot reproduce this issue even logged in as the user experiencing this issue, generating the same PDF and mailing to the same contacts. So, I guess it is an intermittent issue?
All attributes are read-write for the users concerned