Update app.py

app.py

@@ -397,7 +397,8 @@ def issue_tokens(send,rec,amount):
             print (f'val:: {val}')
             if val == False:
                 p=False 
-                mes = f"Blockchain is not valid. {mes2} at Index {ind}"
+                #mes = f"Blockchain is not valid. {mes2} at Index {ind}"
+                mes = "Blockchain is not valid."
             
             #if val == True:
             if p==True: