Error

Got error 28 from storage engine
SELECT webcal_entry.cal_name, webcal_entry.cal_description, webcal_entry.cal_date, webcal_entry.cal_time, webcal_entry.cal_id, webcal_entry.cal_ext_for_id, webcal_entry.cal_priority, webcal_entry.cal_access, webcal_entry.cal_duration, webcal_entry_user.cal_status, webcal_entry_user.cal_category, webcal_entry_user.cal_login , webcal_entry_repeats.cal_type, webcal_entry_repeats.cal_end, webcal_entry_repeats.cal_frequency, webcal_entry_repeats.cal_days FROM webcal_entry, webcal_entry_repeats, webcal_entry_user WHERE webcal_entry.cal_id = webcal_entry_repeats.cal_id AND webcal_entry.cal_id = webcal_entry_user.cal_id AND webcal_entry_user.cal_status IN ('A','W') AND (webcal_entry_user.cal_login = '5211' ) AND (webcal_entry_repeats.cal_end >= 20250401 OR webcal_entry_repeats.cal_end IS NULL) ORDER BY webcal_entry.cal_time, webcal_entry.cal_id