Buttons create travel request and create expenses not working in My trips and expenses

Dear Experts,

While clicking on create new travel request and new expense report from My trips and expenses throwing an error page not found.

I am able to use through normal links of create new request and expense report.

I searched the threads but not able to find the solution.

Please guide me in this...

Thanks in advance

With regards,

Y.V.P.Deepak