Chrome extension crashes. Scripts don't work. Security policy?

Question

JavaScript

Just started making extensions for Chrome.
The goal is to make a javascript parser.
I want to make a frame in which I will load the page for parsing and I need to access its elements from the main window.
Since you just can’t get through to a frame from another domain because of the security policy, I decided to make an extension.
That's just how to be there with security policies? There are a lot of errors in the console - scripts do not work - in general, something is not right.
Here is the manifest code

{ 
      "name": "myParser", 
      "manifest_version": 2,
      "version": "2.0", 
      "description": "Parser", 
      "permissions": [
         "<all_urls>",
    	 "unlimitedStorage"
       ], 
      "app": {
          "launch": {
             "local_path": "main.html"
          }
       },
       "icons": { 
    	"16": "css/images/Spider-16.png" 
       }
    }

Main.html

<script type="text/javascript" src="/js/jquery-1.7.2.min.js"></script>
    <script type="text/javascript" src="/js/my.js"></script>
    
    <frameset  cols="250,*">
      <frame src="page1.html" name="topFrame"  >
      <frame src="ЗДЕСЬ УРЛ САЙТА,КОТОРЫЙ ПАРСИМ" name="topFrame" scrolling="no"  id="Parseframe">
    </frameset>

I throw a regular alert in my.js and it does not work,
besides that it also writes me various nastiness, such as
Unrecognized Content-Security-Policy directive 'ha256-AJl abracadabra'.
Refused to execute inline script because it violates the following Content Security Policy directive: "script-src 'self' chrome-extension-resource:". Either the 'unsafe-inline' keyword, a hash ('sha256-AJl abracadabra'), or a nonce ('nonce-...') is required to enable inline execution.
What needs to be written so that at least the basic functionality works?
Thanks

Answer 1

Try adding sha256-abracadabra to your manifest, unless of course it changes when you restart
Content-Security-Policy: script-src 'sha256-your abracadabra'