Hi Neha,
Please check out this question: https://forum.mendix.com/link/questions/103195
Would that solve it?
If not, can you provide a little more information? Did it work before? What changed since then? Did you restart the computer and did that change anything?
It may help moving your mendix project to a folder outside of you user folder and make sure it is not on a onedrive folder for example. Other tools may interfere with the working of Mendix.
I hope this helps.