Merge remote-tracking branch 'origin/patch-4'

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# especially if it merges an updated upstream into a topic branch.
#
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.

evennia/utils/logger.py

@@ -281,6 +281,8 @@ class GetLogObserver:
         log_msg = twisted_logger.formatEventAsClassicLogText(
             event, formatTime=lambda e: twisted_logger.formatTime(e, _TIME_FORMAT)
         )
+        if log_msg is None:
+            return None
         return f"{component_prefix}{log_msg}"
 
     def __call__(self, outfile):