Making static route more verbose if file not found (#1945)

Co-authored-by: Adam Hopkins <admhpkns@gmail.com>

sanic/static.py

@@ -13,6 +13,7 @@ from sanic.exceptions import (
     InvalidUsage,
 )
 from sanic.handlers import ContentRangeHandler
+from sanic.log import error_logger
 from sanic.response import HTTPResponse, file, file_stream
 
 
@@ -40,6 +41,10 @@ async def _static_request_handler(
     # match filenames which got encoded (filenames with spaces etc)
     file_path = path.abspath(unquote(file_path))
     if not file_path.startswith(path.abspath(unquote(root_path))):
+        error_logger.exception(
+            f"File not found: path={file_or_directory}, "
+            f"relative_url={file_uri}"
+        )
         raise FileNotFound(
             "File not found", path=file_or_directory, relative_url=file_uri
         )
@@ -94,6 +99,10 @@ async def _static_request_handler(
     except ContentRangeError:
         raise
     except Exception:
+        error_logger.exception(
+            f"File not found: path={file_or_directory}, "
+            f"relative_url={file_uri}"
+        )
         raise FileNotFound(
             "File not found", path=file_or_directory, relative_url=file_uri
         )