CORs error while running on ubuntu server remotely while running fine on local machine

[rbiswal1990]

Access to XMLHttpRequest at 'http://serverip:7777/api/new_datarun/30' from origin 'http://serverip:7779' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Can someone please suggest the solution here.
Tanks in advance.

[wangqianwen0418]

Can you visit the address "http://serverip:7777/api/new_datarun/30" in your web browser?

[rbiswal2018]

Its showing this method is not allowed after hitting the above url "http://serverip:7777/api/new_datarun/30" in browser.