Update app.py

app.py

@@ -66,8 +66,11 @@ def generate_text(
     picoutput=""
     history_prompt=""
     if in_files:
-        picoutput=f"sends a picture that contains the following:  {run_pic(in_files)}"
-        yield picoutput
+        try:
+            picoutput=f"sends a picture that contains the following:  {run_pic(in_files)}"
+            yield picoutput
+        except:
+            yield "only picture"
     else:
         temp = ""
         # Create system_prompt as a dictionary