Running user pipeline with dagster v1.3.4 and when I click on a materialized asset, I get a graphql error:

Operation name: AssetEventsQuery

Message: Cannot return null for non-nullable field Run.mode.

Path: ["assetOrError","assetMaterializations",0,"runOrError","mode"]

Locations: [{"line":191,"column":7}]

Stack Trace:
  File "/usr/local/lib/python3.7/site-packages/graphql/execution/execute.py", line 541, in execute_field
    return_type, field_nodes, info, path, result
  File "/usr/local/lib/python3.7/site-packages/graphql/execution/execute.py", line 621, in complete_value
    "Cannot return null for non-nullable field"

is the

dagit

server on the same version? I believe this was a bug fixed a few releases a go. You should be able to see the version of dagit by hovering on the dagster logo

@alex Thanks! dagit is v1.2.2. Will upgrade!