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# ask-community
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Mohan Ganeshan

04/18/2023, 12:31 PM
Hi, I have received the below error to report in the dagster slack: Operation name: AssetGraphLiveQuery Message: Attempted to deserialize class "EventLogRecord" which is not in the whitelist. This error can occur due to version skew, verify processes are running expected versions. Descent path: <root:dict> Path: ["assetNodes",0,"assetMaterializations"] Locations: [{"line":35,"column":3}]
o

owen

04/18/2023, 5:06 PM
hi @Mohan Ganeshan! this can happen if your
dagit
version is different (generally lower) than your
dagster
version. can you confirm if that's the case?
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Mohan Ganeshan

04/19/2023, 7:46 AM
Hi @owen, thank you for the response, Yes! it was different version Dagster 1.2.7 & Dagit 0.15.5 and I corrected it. Now it looks fine
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