diff --git a/api/chalicelib/core/alerts_processor.py b/api/chalicelib/core/alerts_processor.py
index 76f08c3e56..efb344785e 100644
--- a/api/chalicelib/core/alerts_processor.py
+++ b/api/chalicelib/core/alerts_processor.py
@@ -2,6 +2,7 @@
 import logging
 
 from decouple import config
+from pydantic_core._pydantic_core import ValidationError
 
 import schemas
 from chalicelib.core import alerts_listener
@@ -109,11 +110,18 @@ def Build(a):
     if a["seriesId"] is not None:
         a["filter"]["sort"] = "session_id"
         a["filter"]["order"] = schemas.SortOrderType.desc
-        a["filter"]["startDate"] = -1
+        a["filter"]["startDate"] = 0
         a["filter"]["endDate"] = TimeUTC.now()
-        full_args, query_part = sessions.search_query_parts(
-            data=schemas.SessionsSearchPayloadSchema.model_validate(a["filter"]), error_status=None, errors_only=False,
-            issue=None, project_id=a["projectId"], user_id=None, favorite_only=False)
+        try:
+            data = schemas.SessionsSearchPayloadSchema.model_validate(a["filter"])
+        except ValidationError:
+            logging.warning("Validation error for:")
+            logging.warning(a["filter"])
+            raise
+
+        full_args, query_part = sessions.search_query_parts(data=data, error_status=None, errors_only=False,
+                                                            issue=None, project_id=a["projectId"], user_id=None,
+                                                            favorite_only=False)
         subQ = f"""SELECT COUNT(session_id) AS value 
                 {query_part}"""
     else:
diff --git a/ee/api/chalicelib/core/alerts_processor.py b/ee/api/chalicelib/core/alerts_processor.py
index 57ea07da7e..6927861196 100644
--- a/ee/api/chalicelib/core/alerts_processor.py
+++ b/ee/api/chalicelib/core/alerts_processor.py
@@ -2,10 +2,11 @@
 import logging
 
 from decouple import config
+from pydantic_core._pydantic_core import ValidationError
 
 import schemas
-from chalicelib.core import alerts_listener
 from chalicelib.core import alerts
+from chalicelib.core import alerts_listener
 from chalicelib.utils import pg_client
 from chalicelib.utils.TimeUTC import TimeUTC
 
@@ -114,11 +115,17 @@ def Build(a):
     if a["seriesId"] is not None:
         a["filter"]["sort"] = "session_id"
         a["filter"]["order"] = schemas.SortOrderType.desc
-        a["filter"]["startDate"] = -1
+        a["filter"]["startDate"] = 0
         a["filter"]["endDate"] = TimeUTC.now()
-        full_args, query_part = sessions.search_query_parts(
-            data=schemas.SessionsSearchPayloadSchema.model_validate(a["filter"]), error_status=None, errors_only=False,
-            issue=None, project_id=a["projectId"], user_id=None, favorite_only=False)
+        try:
+            data = schemas.SessionsSearchPayloadSchema.model_validate(a["filter"])
+        except ValidationError:
+            logging.warning("Validation error for:")
+            logging.warning(a["filter"])
+            raise
+        full_args, query_part = sessions.search_query_parts(data=data, error_status=None, errors_only=False,
+                                                            issue=None, project_id=a["projectId"], user_id=None,
+                                                            favorite_only=False)
         subQ = f"""SELECT COUNT(session_id) AS value 
                 {query_part}"""
     else:
diff --git a/ee/api/chalicelib/core/alerts_processor_exp.py b/ee/api/chalicelib/core/alerts_processor_exp.py
index 310c6faa9b..dba05fc412 100644
--- a/ee/api/chalicelib/core/alerts_processor_exp.py
+++ b/ee/api/chalicelib/core/alerts_processor_exp.py
@@ -1,13 +1,14 @@
 import logging
 
 from decouple import config
+from pydantic_core._pydantic_core import ValidationError
 
 import schemas
-from chalicelib.core import alerts_listener, alerts_processor
 from chalicelib.core import alerts
+from chalicelib.core import alerts_listener, alerts_processor
+from chalicelib.core import sessions_exp as sessions
 from chalicelib.utils import pg_client, ch_client, exp_ch_helper
 from chalicelib.utils.TimeUTC import TimeUTC
-from chalicelib.core import sessions_exp as sessions
 
 logging.basicConfig(level=config("LOGLEVEL", default=logging.INFO))
 
@@ -122,11 +123,18 @@ def Build(a):
     if a["seriesId"] is not None:
         a["filter"]["sort"] = "session_id"
         a["filter"]["order"] = schemas.SortOrderType.desc
-        a["filter"]["startDate"] = -1
+        a["filter"]["startDate"] = 0
         a["filter"]["endDate"] = TimeUTC.now()
-        full_args, query_part = sessions.search_query_parts_ch(
-            data=schemas.SessionsSearchPayloadSchema.parse_obj(a["filter"]), error_status=None, errors_only=False,
-            issue=None, project_id=a["projectId"], user_id=None, favorite_only=False)
+        try:
+            data = schemas.SessionsSearchPayloadSchema.model_validate(a["filter"])
+        except ValidationError:
+            logging.warning("Validation error for:")
+            logging.warning(a["filter"])
+            raise
+
+        full_args, query_part = sessions.search_query_parts_ch(data=data, error_status=None, errors_only=False,
+                                                               issue=None, project_id=a["projectId"], user_id=None,
+                                                               favorite_only=False)
         subQ = f"""SELECT COUNT(session_id) AS value 
                 {query_part}"""
     else: