bug fix with typing

pipeline.py

@@ -168,8 +168,13 @@ class Components :
 		# How many rows sub-partition must we divide this into ?
 		#	let us fix the data types here every _id field will be an np.int64...
 		#
+		
 		for name in df.columns.tolist():
+			
 			if name.endswith('_id') :
+				if df[name].isnull().sum() > 0 :
+					df[name].fillna(0,inplace=True)
+				else:
 					df[name] = df[name].astype(np.int64)