Generic ValueError -> CertStorageError

letsencrypt/errors.py

@@ -5,10 +5,6 @@ class Error(Exception):
     """Generic Let's Encrypt client error."""
 
 
-class SubprocessError(Error):
-    """Subprocess handling error."""
-
-
 class AccountStorageError(Error):
     """Generic `.AccountStorage` error."""
 
@@ -21,6 +17,14 @@ class ReverterError(Error):
     """Let's Encrypt Reverter error."""
 
 
+class SubprocessError(Error):
+    """Subprocess handling error."""
+
+
+class CertStorageError(Error):
+    """Generic `.CertStorage` error."""
+
+
 # Auth Handler Errors
 class AuthorizationError(Error):
     """Authorization error."""