Handle change of non-existent file exception type in latest fsspec version.

Author: mauvilsa

CHANGELOG.rst

@@ -21,6 +21,7 @@ Fixed
 ^^^^^
 - Failure to print help when ``object`` used as type hint.
 - Failure to parse init args when type hint is union of str and class.
+- Handle change of non-existent file exception type in latest fsspec version.
 
 
 v4.13.1 (2022-08-05)

jsonargparse/util.py

@@ -410,7 +410,7 @@ def __init__(
                     handle = fsspec.open(abs_path, fsspec_mode)
                     handle.open()
                     handle.close()
-                except FileNotFoundError:
+                except (FileNotFoundError, KeyError):
                     raise TypeError('Path does not exist: '+abs_path)
                 except PermissionError:
                     raise TypeError('Path exists but no permission to access: '+abs_path)