Cannot connect to eks cluster via kubectl - amazon-web-services

Question

I am finding it impossible to connect to my k8s cluster on eks.
I am getting the error
error: You must be logged in to the server (Unauthorized)
However,
I have multiple clusters:
$ kubectl config get-clusters
NAME
hilarious-unicorn-1568659474.eu-west-1.eksctl.io
arn:aws:eks:eu-west-1:<redacted>:cluster/derp
These also appear when I do
$ kubectl config get-contexts
My issue is, if I switch to my eu-west cluster/context by running kubectl config use-context <my context>
And then do kubectl cluster-info I get
error: You must be logged in to the server (Unauthorized)
I have ran
$ aws eks update-kubeconfig --name myCluster
And this has updated in my ~/.kube/config file but to no avail.
I am literally at a loss as to why this is not working because it was previously working, and I can authenticate on another cluster.
Edits due to Comments
#Eduardo Baitello
I have aws-iam-authenticator installed. Although we also use awsmfa.
Here is the contents of my .kube/config
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: redacted
server: redacted
name: arn:aws:eks:eu-west-1:redacted:cluster/savvy
- cluster:
certificate-authority-data: redacted
server: redacted
name: hilarious-unicorn-1568659474.eu-west-1.eksctl.io
contexts:
- context:
cluster: arn:aws:eks:eu-west-1:redacted:cluster/savvy
user: arn:aws:eks:eu-west-1:redacted:cluster/savvy
name: arn:aws:eks:eu-west-1:redacted:cluster/savvy
- context:
cluster: hilarious-unicorn-1568659474.eu-west-1.eksctl.io
user: karl#hilarious-unicorn-1568659474.eu-west-1.eksctl.io
name: karl#hilarious-unicorn-1568659474.eu-west-1.eksctl.io
current-context: arn:aws:eks:eu-west-1:redacted:cluster/savvy
kind: Config
preferences: {}
users:
- name: arn:aws:eks:eu-west-1:redacted:cluster/savvy
user:
exec:
apiVersion: client.authentication.k8s.io/v1alpha1
args:
- --region
- eu-west-1
- eks
- get-token
- --cluster-name
- savvy
command: aws
- name: karl#hilarious-unicorn-1568659474.eu-west-1.eksctl.io
user:
exec:
apiVersion: client.authentication.k8s.io/v1alpha1
args:
- token
- -i
- hilarious-unicorn-1568659474
command: aws-iam-authenticator
env: null
#shogan
Running kubectl describe configmap -n kube-system aws-auth says I am (Unauthorized)