diff --git a/samcli/local/apigw/local_apigw_service.py b/samcli/local/apigw/local_apigw_service.py
index 43c9260251..0d1fa0e38a 100644
--- a/samcli/local/apigw/local_apigw_service.py
+++ b/samcli/local/apigw/local_apigw_service.py
@@ -347,7 +347,8 @@ def _request_handler(self, **kwargs):
                     self.api.stage_variables,
                     None,
                 )
-        except UnicodeDecodeError:
+        except UnicodeDecodeError as error:
+            LOG.error("UnicodeDecodeError while processing HTTP request: %s", error)
             return ServiceErrorResponses.lambda_failure_response()
 
         stdout_stream = io.BytesIO()