Update app.py

app.py

@@ -26,7 +26,8 @@ import sys
 import warnings
 
 def err(msg):
-    print( "\n >>> [!!!] "+msg+"\n" )
+    if str(msg).strip() != "":
+        print( "\n >>> [!!!] "+msg+"\n" )
     pass
 
 warnings.filterwarnings("ignore")