handle invalid lnurl-w responses on redeem_lnurl_withdraw.

lnbits/core/services.py

@@ -196,6 +196,7 @@ async def redeem_lnurl_withdraw(
         r = await client.get(str(lnurl))
         res = r.json()
 
+    try:
         _, payment_request = await create_invoice(
             wallet_id=wallet_id,
             amount=int(res["maxWithdrawable"] / 1000),
@@ -203,6 +204,11 @@ async def redeem_lnurl_withdraw(
             extra=extra,
             conn=conn,
         )
+    except:
+        print(
+            f"failed to create invoice on redeem_lnurl_withdraw from {lnurl}. params: {res}"
+        )
+        return None
 
     if wait_seconds:
         await trio.sleep(wait_seconds)