Use consistent log file names, introduced initLogger (#3403)

### What problem does this PR solve?

Use consistent log file names, introduced initLogger

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

api/db/services/file_service.py

@@ -13,6 +13,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
+import logging
 import re
 import os
 from concurrent.futures import ThreadPoolExecutor
@@ -30,7 +31,6 @@ from api.db.services.file2document_service import File2DocumentService
 from api.utils import get_uuid
 from api.utils.file_utils import filename_type, thumbnail_img
 from rag.utils.storage_factory import STORAGE_IMPL
-from api.utils.log_utils import logger
 
 
 class FileService(CommonService):
@@ -276,7 +276,7 @@ class FileService(CommonService):
             return cls.model.delete().where((cls.model.tenant_id == user_id)
                                             & (cls.model.id == folder_id)).execute(),
         except Exception:
-            logger.exception("delete_folder_by_pf_id")
+            logging.exception("delete_folder_by_pf_id")
             raise RuntimeError("Database error (File retrieval)!")
 
     @classmethod
@@ -325,7 +325,7 @@ class FileService(CommonService):
         try:
             cls.filter_update((cls.model.id << file_ids, ), { 'parent_id': folder_id })
         except Exception:
-            logger.exception("move_file")
+            logging.exception("move_file")
             raise RuntimeError("Database error (File move)!")
 
     @classmethod