Loading Nodes 37/43

Last week I added node-red-contrib-counter into my palette and subsequently after restarting Node-RED was presented with the "Loading Nodes 37/43" when opening the Node-RED editor.

I tried removing the node-red-contrib-counter using the npm remove command, but this didn't resolve the issue.

Please can you give me any advice as how to rectify this situation?

Can you check the browser developer console for any error messages?

Just checked that and noticed this: