White screen instead of web interface

[B@ktery]

I wanted to remove the subscription message when I log in to this article

1. Change to working directory
   cd /usr/share/javascript/proxmox-widget-toolkit
2. Make backup of file
   cp proxmoxlib.js proxmoxlib.js.bak
3. Edit the file
   nano proxmoxlib.js
4. Locate this line of code inside the file (use ctrl+w in nano)
   if (data.status !== 'Active') {
5. Replace it with this
   if (false) {
6. Restart the Proxmox service (also be sure to clear your browser cache)
   systemctl restart pveproxy.service

After restarting the service systemctl restart pveproxy.service and instead of a web interface, I have a white screen in the browser.
I returned the file proxmoxlib.js from the backup, restarted the service, and tried to restart the server, but the web interface is still not displayed.
Tell me how to return the web interface?

 

[wolfgang]

The easiest way to remove this is to buy a subscription.