Update app.py

app.py

@@ -30,12 +30,12 @@ api = HfApi(token=token_self)
 
 def bc_transactions(block):
     #mes, out = issue_tokens(sender,recipient,amount)
-    if out == True:
+    try:
         blockchain.new_transaction(block)
         message = "Transaction Added to Pool"
         data = pd.DataFrame(blockchain.pending_transactions)
-    if out == False:
-        message = mes
+    except Exception as e:
+        message = e
         data = None
     return data,message,None,None,None