From f7e43cdd950f34e3faddf167d30916f965491963 Mon Sep 17 00:00:00 2001
From: calle <93376500+callebtc@users.noreply.github.com>
Date: Wed, 22 Feb 2023 13:30:45 +0100
Subject: [PATCH] check for amountless invoices deeper in the call stack
 (#1536)

---
 lnbits/core/services.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lnbits/core/services.py b/lnbits/core/services.py
index f5bf0b469..b57883001 100644
--- a/lnbits/core/services.py
+++ b/lnbits/core/services.py
@@ -69,6 +69,10 @@ async def create_invoice(
     internal: Optional[bool] = False,
     conn: Optional[Connection] = None,
 ) -> Tuple[str, str]:
+
+    if not amount > 0:
+        raise InvoiceFailure("Amountless invoices not supported.")
+
     invoice_memo = None if description_hash else memo
 
     # use the fake wallet if the invoice is for internal use only