I have issues with creating an EKS cluster, I get this error

aws:cloudformation:Stack (process-cluster-nodes):

error: 1 error occurred:

* creating urn:pulumi:eks-process-cluster-cdev::eks-process-cluster::eks:index:Cluster$aws:cloudformation/stack:Stack::process-cluster-nodes: 1 error occurred:

* ROLLBACK_COMPLETE: ["The following resource(s) failed to create: [NodeGroup]. . Rollback requested by user." "The requested configuration is currently not supported. Please check the documentation for supported configurations. Launching EC2 instance failed."]

error: update failed

error: Running program '/process-cluster/pulumi' failed with an unhandled exception:

TypeError: Cannot use 'in' operator to search for 'NodeGroup' in undefined

Any idea what is wrong?

Some variable had no value. You are expecting something to be a collection, but it is

undefined

.

Could it be that the default instance type is not supported in the region where I run it?

t2 is pretty old...