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Might be the same as <https://pulumi-community.slack.com/archives/CRH5ENVDX/p1601472296033600> — do you have `aws:region` configured?

Sadly, now I am getting the following error:

&gt;       File “/Users/jss/.pyenv/versions/3.8.2/envs/pulumi/lib/python3.8/site-packages/pulumi/runtime/invoke.py”, line 124, in do_invoke
&gt;         return rpc.translate_output_properties(deserialized, lambda prop: prop, typ) if typ else deserialized
&gt;       File “/Users/jss/.pyenv/versions/3.8.2/envs/pulumi/lib/python3.8/site-packages/pulumi/runtime/rpc.py”, line 440, in translate_output_properties
&gt;         translated_values = {
&gt;       File “/Users/jss/.pyenv/versions/3.8.2/envs/pulumi/lib/python3.8/site-packages/pulumi/runtime/rpc.py”, line 441, in &lt;dictcomp&gt;
&gt;         k: translate_output_properties(v, output_transformer, get_type(k))
&gt;       File “/Users/jss/.pyenv/versions/3.8.2/envs/pulumi/lib/python3.8/site-packages/pulumi/runtime/rpc.py”, line 464, in translate_output_properties
&gt;         raise AssertionError(f”Unexpected type. Expected ‘list’ got ‘{typ}’“)
&gt;     AssertionError: Unexpected type. Expected ‘list’ got ‘typing.Sequence[pulumi_aws.ecs.outputs.GetClusterSettingResult]’