Prevent Paperless crash when consume folder is unavailable

src/documents/consumer.py

@@ -87,20 +87,27 @@ def consume_new_files(self):
  """
  ignored_files = []
  files = []
- for entry in os.scandir(self.consume):
- if entry.is_file():
- file = (entry.path, entry.stat().st_mtime)
- if file in self._ignore:
- ignored_files.append(file)
+ try:
+ for entry in os.scandir(self.consume):
+ if entry.is_file():
+ file = (entry.path, entry.stat().st_mtime)
+ if file in self._ignore:
+ ignored_files.append(file)
+ else:
+ files.append(file)
  else:
- files.append(file)
- else:
- self.logger.warning(
- "Skipping %s as it is not a file",
- entry.path
- )
-
- if not files:
+ self.logger.warning(
+ "Skipping %s as it is not a file",
+ entry.path
+ )
+
+ if not files:
+ return
+
+ except OSError:
+ self.logger.warning(
+ "Consume folder is unavailable."
+ )
  return
 
  # Set _ignore to only include files that still exist.