diff --git a/vitrage/api/controllers/v1/alarm.py b/vitrage/api/controllers/v1/alarm.py
index e0a56f7c7..4a590fca4 100755
--- a/vitrage/api/controllers/v1/alarm.py
+++ b/vitrage/api/controllers/v1/alarm.py
@@ -16,6 +16,7 @@ import json
 import pecan
 
 from oslo_log import log
+from oslo_utils import encodeutils
 from oslo_utils.strutils import bool_from_string
 from osprofiler import profiler
 from pecan.core import abort
@@ -52,8 +53,9 @@ class AlarmsController(RootRestController):
         try:
             return self._get_alarms(vitrage_id, all_tenants)
         except Exception as e:
-            LOG.exception('failed to get alarms %s', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to get alarms %s', to_unicode)
+            abort(404, to_unicode)
 
     @staticmethod
     def _get_alarms(vitrage_id=None, all_tenants=False):
@@ -68,5 +70,6 @@ class AlarmsController(RootRestController):
             return alarms_list
 
         except Exception as e:
-            LOG.exception('failed to open file %s ', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to open file %s ', to_unicode)
+            abort(404, to_unicode)
diff --git a/vitrage/api/controllers/v1/count.py b/vitrage/api/controllers/v1/count.py
index d716f858f..0100c73d2 100755
--- a/vitrage/api/controllers/v1/count.py
+++ b/vitrage/api/controllers/v1/count.py
@@ -14,6 +14,7 @@ import json
 import pecan
 
 from oslo_log import log
+from oslo_utils import encodeutils
 from oslo_utils.strutils import bool_from_string
 from pecan.core import abort
 
@@ -50,5 +51,6 @@ class CountsController(RootRestController):
             return json.loads(alarm_counts_json)
 
         except Exception as e:
-            LOG.exception('failed to get alarm counts %s', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to get alarm counts %s', to_unicode)
+            abort(404, to_unicode)
diff --git a/vitrage/api/controllers/v1/event.py b/vitrage/api/controllers/v1/event.py
index 074888441..055cac55d 100644
--- a/vitrage/api/controllers/v1/event.py
+++ b/vitrage/api/controllers/v1/event.py
@@ -52,6 +52,6 @@ class EventController(RootRestController):
                                       event_type=event_type,
                                       details=details)
         except Exception as e:
-            LOG.exception('Failed to post an event %s',
-                          encodeutils.exception_to_unicode(e))
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('Failed to post an event %s', to_unicode)
+            abort(404, to_unicode)
diff --git a/vitrage/api/controllers/v1/rca.py b/vitrage/api/controllers/v1/rca.py
index a3b53e786..1d49f453f 100644
--- a/vitrage/api/controllers/v1/rca.py
+++ b/vitrage/api/controllers/v1/rca.py
@@ -17,6 +17,7 @@ import json
 import pecan
 
 from oslo_log import log
+from oslo_utils import encodeutils
 from oslo_utils.strutils import bool_from_string
 from osprofiler import profiler
 from pecan.core import abort
@@ -59,5 +60,6 @@ class RCAController(RootRestController):
             return graph
 
         except Exception as e:
-            LOG.exception('failed to get rca %s ', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to get rca %s ', to_unicode)
+            abort(404, to_unicode)
diff --git a/vitrage/api/controllers/v1/resource.py b/vitrage/api/controllers/v1/resource.py
index a99b2fa0f..60e189cb6 100644
--- a/vitrage/api/controllers/v1/resource.py
+++ b/vitrage/api/controllers/v1/resource.py
@@ -13,6 +13,7 @@ import json
 import pecan
 
 from oslo_log import log
+from oslo_utils import encodeutils
 from oslo_utils.strutils import bool_from_string
 from osprofiler import profiler
 from pecan.core import abort
@@ -46,8 +47,9 @@ class ResourcesController(RootRestController):
         try:
             return self._get_resources(resource_type, all_tenants)
         except Exception as e:
-            LOG.exception('failed to list resources %s', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to list resources %s', to_unicode)
+            abort(404, to_unicode)
 
     @staticmethod
     def _get_resources(resource_type=None, all_tenants=False):
@@ -63,8 +65,9 @@ class ResourcesController(RootRestController):
             resources = json.loads(resources_json)['resources']
             return resources
         except Exception as e:
-            LOG.exception('failed to get resources %s ', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to get resources %s ', to_unicode)
+            abort(404, to_unicode)
 
     @pecan.expose('json')
     def get(self, vitrage_id):
@@ -92,7 +95,7 @@ class ResourcesController(RootRestController):
 
             return json.loads(resource)
         except Exception as e:
+            to_unicode = encodeutils.exception_to_unicode(e)
             LOG.exception('failed to show resource with vitrage_id(%s),'
-                          'Exception: %s',
-                          vitrage_id, e)
-            abort(404, str(e))
+                          'Exception: %s', vitrage_id, to_unicode)
+            abort(404, to_unicode)
diff --git a/vitrage/api/controllers/v1/template.py b/vitrage/api/controllers/v1/template.py
index e75360c79..9482b4d17 100644
--- a/vitrage/api/controllers/v1/template.py
+++ b/vitrage/api/controllers/v1/template.py
@@ -15,6 +15,7 @@ import json
 import pecan
 
 from oslo_log import log
+from oslo_utils import encodeutils
 from osprofiler import profiler
 from pecan.core import abort
 
@@ -41,8 +42,9 @@ class TemplateController(RootRestController):
         try:
             return self._get_templates()
         except Exception as e:
-            LOG.exception('failed to get template list %s', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to get template list %s', to_unicode)
+            abort(404, to_unicode)
 
     @pecan.expose('json')
     def get(self, template_uuid):
@@ -57,8 +59,11 @@ class TemplateController(RootRestController):
         try:
             return self._show_template(template_uuid)
         except Exception as e:
-            LOG.exception('failed to show template %s' % template_uuid, e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to show template %s --> %s',
+                          template_uuid,
+                          to_unicode)
+            abort(404, to_unicode)
 
     @pecan.expose('json')
     def post(self, **kwargs):
@@ -75,8 +80,9 @@ class TemplateController(RootRestController):
         try:
             return self._validate(templates)
         except Exception as e:
-            LOG.exception('failed to validate template(s) %s', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to validate template(s) %s', to_unicode)
+            abort(404, to_unicode)
 
     @staticmethod
     def _get_templates():
@@ -88,8 +94,9 @@ class TemplateController(RootRestController):
             template_list = json.loads(templates_json)['templates_details']
             return template_list
         except Exception as e:
-            LOG.exception('failed to get template list %s ', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to get template list %s ', to_unicode)
+            abort(404, to_unicode)
 
     @staticmethod
     def _show_template(template_uuid):
@@ -102,8 +109,9 @@ class TemplateController(RootRestController):
         try:
             return json.loads(template_json)
         except Exception as e:
-            LOG.exception('failed to show template with uuid: %s ', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to show template with uuid: %s ', to_unicode)
+            abort(404, to_unicode)
 
     @staticmethod
     def _validate(templates):
@@ -114,5 +122,6 @@ class TemplateController(RootRestController):
         try:
             return json.loads(result_json)
         except Exception as e:
-            LOG.exception('failed to open template file(s) %s ', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to open template file(s) %s ', to_unicode)
+            abort(404, to_unicode)
diff --git a/vitrage/api/controllers/v1/topology.py b/vitrage/api/controllers/v1/topology.py
index bbd8b3323..4de4ae04f 100644
--- a/vitrage/api/controllers/v1/topology.py
+++ b/vitrage/api/controllers/v1/topology.py
@@ -16,6 +16,7 @@
 import json
 
 from oslo_log import log
+from oslo_utils import encodeutils
 from oslo_utils.strutils import bool_from_string
 from osprofiler import profiler
 import pecan
@@ -89,8 +90,9 @@ class TopologyController(RootRestController):
                 return RootRestController.as_tree(graph, node_id)
 
         except Exception as e:
-            LOG.exception('failed to get topology %s ', e)
-            abort(404, str(e))
+            to_unicode = encodeutils.exception_to_unicode(e)
+            LOG.exception('failed to get topology %s ', to_unicode)
+            abort(404, to_unicode)
 
     @staticmethod
     def _check_input_para(graph_type, depth, query, root, all_tenants):