Survey emails are not triggered and surveys are not generated.
Error on the form when survey is assigned "Instance could not be created"
Possible reasons and fixes to check :
When the category is missing for the assessable record, it leads to the error: "Instance could not be created"
On the table : asmt_m2m_category_assessment, category was missing for the assessable record : On creating that , the issue is resolved.
Things to check in the case of similar error :
Also check if OOB Script include:AssessmentUtils is as per OOB.
When we create a new record in asmt_m2m_category_assessment table issue is resolved