Raise the exception instead of just logging the error

Author: Adoliin

yfinance/base.py

@@ -158,7 +158,7 @@ def _fetch_ticker_tz(self, timeout):
             raise
         except Exception as e:
             logger.error(f"Failed to get ticker '{self.ticker}' reason: {e}")
-            return None
+            raise
         else:
             error = data.get('chart', {}).get('error', None)
             if error: