Troubleshooting help: Uncaught TypeError: entityConfig.group.states.find is not a function

Hi all,
no expert in html, js etc.
I made at some point a change (yaml, css, svg) which is now causing the following errors to appear.

* Uncaught TypeError: entityConfig.group.states.find is not a function
URL: http://george.local:8123/local/custom_ui/floorplan/ha-floorplan.html
Line: 481, column: 57
Error: {}

* Cannot find '[object Object]' in HA group configuration
* Cannot find '[object Object]' in HA group configuration
* Cannot find '[object Object]' in HA group configuration

I have rolled back all the changes I thought I did during the time but still getting these errors.
Could anyone please provide some ideas on how I can figure out what is causing this?

THANK YOU