after updating the slms components i get an error message if i want to filter the courses by a specific category. error 42S22, 1054, Unknown column 'a.parent_id' in 'where clause'
https://www.leibnitz-kolleg-hannover.de/kurse/kurse-seminare-finden
the filter works with the batches Hot, New as well and as paid and free. only the category filter throws out this error code
hope you could help Tim