Reduced level of the log warning about file extension not being found

Author: tieneupin

src/murfey/client/analyser.py

@@ -400,7 +400,7 @@ def _analyse(self):
                         mdoc_for_reading = transferred_file
                 if not self._context:
                     if not self._find_extension(transferred_file):
-                        logger.error(f"No extension found for {transferred_file}")
+                        logger.debug(f"No extension found for {transferred_file}")
                         continue
                     if not self._find_context(transferred_file):
                         logger.debug(