Ignore symbol-not-found errors

piker/brokers/ib.py

@@ -448,6 +448,7 @@ class Client:
                         symbol=sym,
                         exchange=exch,
                     )
+                    try:
                         possibles = await self.ib.qualifyContractsAsync(con)
                         for i, condict in enumerate(sorted(
                             map(asdict, possibles),
@@ -456,6 +457,8 @@ class Client:
                         )):
                             expiry = condict['lastTradeDateOrContractMonth']
                             results[f'{sym}.{exch}.{expiry}'] = condict
+                    except RequestError as err:
+                        log.warning(err.message)
 
         return results