Update app.py

app.py

@@ -99,7 +99,7 @@ checkboxes = None
 with col1:
     st.title("Instances")
     if run1_file is not None:
-        name_of_columns = ["Overview"] + sorted([int(item) for item in set(run1_pandas.qid.tolist())])
+        name_of_columns = ["Overview"] + sorted([str(item) for item in set(run1_pandas.qid.tolist())])
         checkboxes = [("Overview", st.checkbox("Overview", key=f"0overview"))]
         st.divider()
         for item in name_of_columns: