Second Viz

app.py

@@ -21,14 +21,14 @@ viz1 = (
 st.altair_chart(viz1, use_container_width=False)
 
 st.header("Visualization 2: Issued Time")
-data["Original Issue Date"] = pd.to_datetime(data["Original Issue Date"],errors="coerce")
+data["Original Issue Date"] = pd.to_datetime(data["Original Issue Date"], errors="coerce")
 data["YearMonth"] = data["Original Issue Date"].dt.to_period("M")
 
 viz2 = (
     alt.Chart(data)
     .mark_line(point=True)
     .encode(
-        x=alt.X("YearMonth:T", title = "Issue Date(Month)"),
+        x=alt.X("yearmonth(YearMonth):T", title = "Issue Date(Month)"),
         y = alt.Y("count():Q", title="Number of License"),
         color = alt.Color("License Type:N", legend=None)
     )