Presentation module not working suddenly

Hi, I don't know why, but without any change Course Presentation has stopped working and loading.

It loads the old Presentations, but I cannot edit them or create new ones.

Moodle version is 3.8.6 on PHP 7.4.14

Please help me, I am developing a course and I cannot edit previous created lessons, or continue with new ones, it stucks on loading.

 

Errors from Console:

h5peditor.js?ver=2020080400:124 Error while loading script 

Event {isTrusted: true, type: "error", target: script, currentTarget: script, eventPhase: 2, …}

bubbles: false

cancelBubble: false

cancelable: false

composed: false

currentTarget: null

defaultPrevented: false

eventPhase: 0

isTrusted: true

path: (5) [script, head, html, document, Window]

returnValue: true

srcElement: script

target: script

timeStamp: 593077.3100000806

type: "error"

h5peditor-editor.js?ver=2020080400:49 [Violation] Avoid using document.write(). https://developers.google.com/web/updates/2016/08/removing-document-write