Hi,
I have been referencing video below to build a flow for multilevel approval flow with dynamic approvals.
https://www.youtube.com/watch?v=R18_qYVPWl4
https://www.youtube.com/watch?v=tiLyIL6Q2Wk&t=287s
And below is my flow




I have got an error message as below

I have double checked sharepoint lists (internal name of the Approvers column in List settings) , ensuring the names are identical.

This is approval matrix
