Update app.py

app.py

@@ -264,9 +264,10 @@ def valid_send():
         response = 'The Blockchain is valid.'
         z=True
     else:
-        response = f'Blockchain is not valid. {mes} at Index {ind}'
+        response = f'Sender Blockchain is not valid. {mes} at Index {ind}'
         z=False
     return response,z
+    
 def valid_rec():
     valid,ind,mes = mychain_rec.chain_valid(mychain_rec.chain)
     if valid:
@@ -421,9 +422,11 @@ def issue_tokens(send,rec,amount):
                         mes ="Not enough tokens"
                         p = False
                 if val == False:
-                    mes = mes
+                    mes1 = mes
                     p = False
                 print(mes)
+            mes=mes1
+            print (mes)
         if z==False:
             mes = "Invalid Blockchain"
             p=False