Check if exchang provides bid/ask via fetch_tickers - and fail with spread filter if it doesn't.

closes #8286

freqtrade/plugins/pairlist/SpreadFilter.py

@@ -5,6 +5,7 @@ import logging
 from typing import Any, Dict, Optional
 
 from freqtrade.constants import Config
+from freqtrade.exceptions import OperationalException
 from freqtrade.exchange.types import Ticker
 from freqtrade.plugins.pairlist.IPairList import IPairList
 
@@ -22,6 +23,12 @@ class SpreadFilter(IPairList):
         self._max_spread_ratio = pairlistconfig.get('max_spread_ratio', 0.005)
         self._enabled = self._max_spread_ratio != 0
 
+        if not self._exchange.get_option('tickers_have_bid_ask'):
+            raise OperationalException(
+                f"{self.name} requires exchange to have bid/ask data for tickers, "
+                "which is not available for the selected exchange / trading mode."
+            )
+
     @property
     def needstickers(self) -> bool:
         """