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 # Hints
 
+If you get errors like this
+
+```
+Error: module.cloudsql.google_sql_database_instance.cloudsql: 1 error(s) occurred:
+* module.cloudsql.google_sql_database_instance.cloudsql: key "default" does not exist in map var.sql_instance_size in:
+${var.sql_instance_size[terraform.workspace]}
+
+Error: module.gke.google_container_cluster.primary: 1 error(s) occurred:
+* module.gke.google_container_cluster.primary: key "default" does not exist in map var.gke_num_nodes in:
+${var.gke_num_nodes[terraform.workspace]}
+```
+you are still in the default workspace. Change to dev by `terraform workspace select dev` or create it `terraform workspace new dev` if you didn't yet.
+
+***
+
 If a resource cannot be found by Terraform and this even prevents a `terraform refresh` with an error like 
 
 ```