Error with ":Query KF Gene Expression in Tumor"

[reductiveminded]

Description:

I am looking at the median expression of a particular gene in all tissue types (using the GTEx node) I wanted to compare this to the expression in tumors.
Below is an Image of the error:

Link to playbook:
https://playbook-workflow-builder.cloud/graph/62284b15-04bb-b27e-c2b3-91b1a180af9d