add some unicode protection

edx_proctoring/backends/software_secure.py

@@ -73,13 +73,14 @@ class SoftwareSecureBackendProvider(ProctoringBackendProvider):
 
         if status not in [200, 201]:
             err_msg = (
-                'Could not register attempt_code = {attempt_code}. '
+                u'Could not register attempt_code = {attempt_code}. '
                 'HTTP Status code was {status_code} and response was {response}.'.format(
                     attempt_code=attempt_code,
                     status_code=status,
                     response=response
                 )
             )
+            log.error(err_msg)
             raise BackendProvideCannotRegisterAttempt(err_msg)
 
         # get the external ID that Software Secure has defined

edx_proctoring/views.py

@@ -531,7 +531,7 @@ class StudentProctoredExamAttemptCollection(AuthenticatedAPIView):
         except ProctoredBaseException, ex:
             return Response(
                 status=status.HTTP_400_BAD_REQUEST,
-                data={"detail": str(ex)}
+                data={"detail": unicode(ex)}
             )