Update app.py

app.py

@@ -528,7 +528,7 @@ def issue_tokens(send,rec,amount):
                 balance = lod["chain"][-1]["balance"]
                 print (balance)
                 balance_send =int(balance)-int(amount)
-                if balance >=0:
+                if balance_send >=0:
                     p=True
                     response,message = get_my_chain_rec(rec)
                     #lod_rec = json.loads(response)