Added the code to handle the NaN and return null in the in-out report section by yatmesh

backend/api/blueprints/reports/in_out_report.py

@@ -219,6 +219,10 @@ async def in_out_report_generate(
     else:
         success = True
         report_df = cosec.read_in_out_summary_xls(report_path)
+        ##############
+        #Added by Yatmesh on 22 nov 17:40
+        report_df = report_df.where(report_df.notna(),None)
+        ###################################
         report_data = report_df.to_dict(orient = "records")
 
     # ┳┓