Update app.py

app.py

@@ -254,6 +254,7 @@ def predict():
 
 def process_dataframe(df):
     try:
+        df = df[df["MkblAmt"].notna()]
         
         # Define the columns needed for two parts.
         required_columns = ['Tag', 'EngCts', 'EngShp', 'EngQua', 'EngCol', 'EngCut', 'EngPol',