1 files changed, 6 insertions, 5 deletions
diff --git a/bsfs/utils/errors.py b/bsfs/utils/errors.py
index c5e8e16..b82e6e2 100644
--- a/bsfs/utils/errors.py
+++ b/bsfs/utils/errors.py
@@ -1,9 +1,4 @@
-"""
 
-Part of the BlackStar filesystem (bsfs) module.
-A copy of the license is provided with the project.
-Author: Matthias Baumgartner, 2022
-"""
 # imports
 import typing
 
@@ -38,4 +33,10 @@ class UnreachableError(ProgrammingError):
 class ConfigError(_BSFSError):
     """User config issue."""
 
+class BackendError(_BSFSError):
+    """Could not parse an AST structure."""
+
+class UnsupportedError(_BSFSError):
+    """Some requested functionality is not supported by an implementation."""
+
 ## EOF ##