Error in Machine Learning Solution Training on hr_case Table with Log Key 555758 and 100% Failure Rate in Training ProgressIssue Machine Learning solution fails with error 'Solution Training Failed. Ask Support to use log key 555758 to investigate trainer logs further.' on hr_case table and Training Progress shows 'Training Failed at 100%'. CauseMissing 'hr_case_reader' role on the Machine Learning user 'sharedservice.worker'.ResolutionTo fix the problem with the training failure, perform the following steps: Assign the 'hr_case_reader' role to the Machine Learning user 'sharedservice.worker' Go to 'sys_user' table.Find the user 'sharedservice.worker' and open it.Go to Roles section and click 'Edit'Search for 'hr_case_reader' in Collection and add it to Roles listSave