From 97757c2e0b95ff2a807033acaa2f5be1f2a1e35d Mon Sep 17 00:00:00 2001
From: Joe Schr <8218910+TheJoeSchr@users.noreply.github.com>
Date: Thu, 2 Feb 2023 18:12:03 +0100
Subject: [PATCH] exchange: fix wrong check for NoneType

`or` doesn't work if `since_ms` or `until_ms` is None
---
 freqtrade/exchange/exchange.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/freqtrade/exchange/exchange.py b/freqtrade/exchange/exchange.py
index 8ac2abf6c..75b96b382 100644
--- a/freqtrade/exchange/exchange.py
+++ b/freqtrade/exchange/exchange.py
@@ -1833,7 +1833,7 @@ class Exchange:
         )
         input_coroutines = [self._async_get_candle_history(
             pair, timeframe, candle_type, since) for since in
-            range(since_ms, until_ms or (arrow.utcnow().int_timestamp * 1000), one_call)]
+            range(since_ms if since_ms else 0, until_ms if until_ms else (arrow.utcnow().int_timestamp * 1000), one_call)]
 
         data: List = []
         # Chunk requests into batches of 100 to avoid overwelming ccxt Throttling