Ignition demo project value not changing

I have downloaded a demo project from Ignition, specifically for water treatment. I've followed all the steps outlined in the readme file and successfully uploaded the tags. Currently, around 70% of the SCADA system is displaying values, with some updating as expected, which is encouraging.

However, a few labels are showing configuration errors related to their assigned tags. When I attempt to link a new tag to these labels, the correct value appears in the Designer tool, and I can see changes there. Unfortunately, these updates don't reflect in the Perspective view.

Could you assist me in resolving these label issues, either by correctly assigning the tags or making any necessary adjustments? Thank you.

I have downloaded the project from below given link:

If you click the red dots do you get any indication of an error? Anything in the gateway logs?

I've encountered an error indicating the tag value is incorrectly configured. Additionally, when attempting to attach a new tag to this label, it does not appear in the perspective.

OK. Can you locate the tag in the tag database, and check the tag diagnostics? That will help start to narrow down the error.

(Tag diagnostics are a small icon in the upper right when you have the troublesome tag open in the designer's tag editor.)

Thanks, so far for your replies and helps.
Below I shared some images of Tag Diagnostic, Tag Settings and Tag at Which I am getting error.


error_tag

Looks like one of the tags in the expression isn't available. You will need to take a look at each one of their diagnostics as well to determine which one is the issue.