Update processing_maira2.py

processing_maira2.py

@@ -344,7 +344,7 @@ class Maira2Processor(LlavaProcessor):
         comparison: str,
         prior_report: str,
         get_grounding: bool = False,
-        assistant_text: str,
+        assistant_text: str = None,
     ):
         """
         This function formats the reporting prompt for the grounded and non-grounded reporting tasks from the given