Getting this error message when I go to run a pipe...
# ask-community
Getting this error message when I go to run a pipeline with composite solid and dynamic outputs (dynamic outputs feed into the composite solid). The pipeline plan is rendered fine and I've executed a pipeline which is only subtly different before (not sure what the subtle difference is).
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dagster.check.CheckError: Failure condition: unexpected error in composition descent during plan building 
  File "/opt/dagster/pipelines/venv/lib/python3.9/site-packages/dagster/grpc/", line 342, in get_external_execution_plan_snapshot
  File "/opt/dagster/pipelines/venv/lib/python3.9/site-packages/dagster/core/execution/", line 720, in create_execution_plan
  File "/opt/dagster/pipelines/venv/lib/python3.9/site-packages/dagster/core/execution/plan/", line 877, in build
  File "/opt/dagster/pipelines/venv/lib/python3.9/site-packages/dagster/core/execution/plan/", line 169, in build
  File "/opt/dagster/pipelines/venv/lib/python3.9/site-packages/dagster/core/execution/plan/", line 234, in _build_from_sorted_solids
    step_input_source = get_step_input_source(
  File "/opt/dagster/pipelines/venv/lib/python3.9/site-packages/dagster/core/execution/plan/", line 496, in get_step_input_source
    check.failed("unexpected error in composition descent during plan building")
  File "/opt/dagster/pipelines/venv/lib/python3.9/site-packages/dagster/check/", line 119, in failed
    raise CheckError("Failure condition: {desc}".format(desc=desc))
cc @alex
hmm, will need some more information to figure this one out. • maybe download the debug file and send it over • any chance can you narrow down the difference? • sending the code that builds up the pipeline in question may help, a minimal repro would be ideal but may be a lot of work
@alex sorry just had to get the piece of work done however possible but plan on going back to reproduce/understand soon.