try another import

testing/upload_sync_test.py

@@ -2,6 +2,7 @@
 from synth_sdk.tracing.decorators import trace_system_sync, _local
 from synth_sdk.tracing.trackers import SynthTrackerSync
 from synth_sdk.tracing.upload import upload
+from synth_sdk.tracing.upload import validate_json
 from synth_sdk.tracing.upload import createPayload
 from synth_sdk.tracing.abstractions import TrainingQuestion, RewardSignal, Dataset
 from synth_sdk.tracing.events.store import event_store