fix initialize with empty application

src/services/chat_service.py

@@ -198,7 +198,13 @@ class ChatService:
                 "answer": INIT_MESSAGES[0],
             }
 
+        try:
             applicant = application["applicants"][0]
+        except:
+            return {
+                "session_id": session_id,
+                "answer": INIT_MESSAGES[2].format(name=name)
+            }
         if not applicant.get("gender") or not applicant.get("dob") or applicant.get("dob") == "-01-" or not applicant.get("weight") or applicant.get("heightFt") is None or applicant.get("heightIn") is None:
             return {
                 "session_id": session_id,