Endless loading of Vkontakte in Firefox?

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Firefox 69.0 (Windows 8.1) stopped loading vk.com for some reason. Just a blank screen appears and there is an endless loading, which does not end with anything (it does not stop until you click on the cross yourself, it does not give any errors or problems).

1) I went to the C / Windows / System32 / drivers / etc folder, opened the hosts file with Notepad, but everything is fine there.

2) I installed another browser, it comes from there. So the problem is in Firefox.

3) Launched Firefox in safe mode, still does not load. The problem is not with plugins.

4) I checked the performance, network and privacy settings: nothing helped either.

5) Enabled developer tools on loading blank page. Showed join files, cause document, they load one by one but get no response from my firefox.

6) I got tired of checking and wrote here. Help someone!!!