Not able to add the unit to the course

Hi @ regis
I am not able to add the unit to the course as the error says .
“GET /static/studio/common/js/vendor/bootstrap.js HTTP/1.1” 404 1714
“GET /static/studio/common/js/vendor/popper.js HTTP/1.1” 404 1705
“GET /static/studio/common/js/vendor/popper.js HTTP/1.1” 404 1705
“GET /static/studio/common/js/vendor/bootstrap.js HTTP/1.1” 404 1714

For more reference see the imaes attached