Project Manager Approve button Not Actionable

Summary

Project Manager Approve button Not Actionable

Content

Hi All,

 

I am facing the following situation: The project time card is submitted and the project manager receives the notification. But when he wants to approve from the APPROVE button in the notification list, approval doesn't happen. The APPROVE button is still green as if user can approve. But it doesn't work.

If he open the notification link, the Actions button is disabled. 

I have another project manager that in the same browser, with same data but for another project, can approve very well. 

The only difference between  them is that the second one has Line Manager role assigned.