Immunify360 Blank Screen

For a few days I noticed that my immunify360 login screen showing blank. I inspected the login page and got some error in console:

Failed to load resource: the server responded with a status of 404 (Not Found)
system.js:563 Error: Error fetching systemjs-import map https://hostname:8090/imunify/assets/static/importmap.json (SystemJS Error#W4 https://github.com/systemjs/systemjs/blob/main/docs/errors.md#W4)
Invalid status code: 404
    at system.js:559:19
(anonymous) @ system.js:563
config.js:1     
Failed to load resource: the server responded with a status of 404 (Not Found)
hostname/:1 Refused to execute script from 'https://hostname:8090/assets/js/config.js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.
index.js:1     
Failed to load resource: the server responded with a status of 404 (Not Found)
hostname/:1 
Refused to execute script from 'https://hostname:8090/assets/static/index.js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.