.

Author: sentrivana

sentry_sdk/_span_batcher.py

@@ -156,7 +156,7 @@ def _flush(self, trace_id: "Optional[str]" = None) -> None:
 
             if trace_id is None:
                 # flush whole buffer, e.g. if the SDK is shutting down
-                buckets = self._span_buffer.keys()
+                buckets = list(self._span_buffer.keys())
             else:
                 buckets = [trace_id]