diff --git a/superset/explore/form_data/api.py b/superset/explore/form_data/api.py
index 1ab9f1a48791..dc6ee7ea94cc 100644
--- a/superset/explore/form_data/api.py
+++ b/superset/explore/form_data/api.py
@@ -126,8 +126,6 @@ def post(self) -> Response:
             return self.response(403, message=str(ex))
         except (ChartNotFoundError, DatasetNotFoundError) as ex:
             return self.response(404, message=str(ex))
-        except Exception as ex:
-            raise ex
 
     @expose("/form_data/<string:key>", methods=["PUT"])
     @protect()
diff --git a/superset/key_value/cache.py b/superset/key_value/cache.py
index 9890bf2349bf..ad396ca60f67 100644
--- a/superset/key_value/cache.py
+++ b/superset/key_value/cache.py
@@ -14,7 +14,7 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-import pickle
+
 from datetime import datetime, timedelta
 from hashlib import md5
 from typing import Any, Dict, List, Optional
diff --git a/superset/utils/cache_manager.py b/superset/utils/cache_manager.py
index 87beb6a0e618..e30f1882c23e 100644
--- a/superset/utils/cache_manager.py
+++ b/superset/utils/cache_manager.py
@@ -15,10 +15,8 @@
 # specific language governing permissions and limitations
 # under the License.
 import logging
-import math
 
 from flask import Flask
-from flask_babel import gettext as _
 from flask_caching import Cache
 
 logger = logging.getLogger(__name__)
@@ -43,7 +41,7 @@ def _init_cache(
         if required and cache_type in (None, "SupersetCache"):
             if cache_type is None:
                 logger.warning(
-                    "Falling back to built-in key-value cache for following "
+                    "Falling back to built-in key-value cache for the following "
                     "cache: `%s`. It is recommended to use `RedisCache`, "
                     "`MemcachedCache` or another dedicated caching backend for "
                     "production deployments",