Update error.py

Author: Nils Bars

ref_utils/error.py

@@ -4,9 +4,9 @@
 
 class RefUtilsError(Exception):
     """
-    Base class of all exception we might raise during test execution.
-    This class allows a "submission test" to distinguisch exceptions raised
-    on purpose from those that are unexpected and not properly handeld by the
+    Base class of all exceptions we might raise during test execution.
+    This class allows a "submission test" to distinguish exceptions raised
+    on purpose from those unexpected and not properly handled by the
     ref-utils.
     """
     def __init__(self, *args: str, **kwargs: Any) -> None:
@@ -35,11 +35,11 @@ def __init__(self, cmd: str, exit_code: int, stdout: bytes, stderr: bytes) -> No
         self.msg = f'[!] Execution of {cmd} failed with exitcode {exit_code_str}.\n'
         self.msg += '--------------------- STDOUT ---------------------\n'
         self.msg += decode_or_str(self.stdout)
-        self.msg += '--------------------- STDERR ---------------------'
+        self.msg += '\n--------------------- STDERR ---------------------\n'
         self.msg += decode_or_str(self.stderr)
 
     def __str__(self) -> str:
         return self.msg
 
 class RefUtilsAssertionError(RefUtilsError):
-    pass
+    pass