Magento 2 – Issue with loading .js.map in Magento PageBuilder (backend)

Using Magento 2 with Nginx/Varnish

Issue: I can’t save category when using PageBuilder with MegaMenu. I get an infinite wheel saying Please wait…

This is my Nginx config:

location /static/ {

    if ($MAGE_MODE = "production") {
      expires max;
    }

    location ~ ^/static/version {
      rewrite ^/static/(versiond*/)?(.*)$ /static/$2 last;
    }

    location ~* .(ico|jpg|jpeg|png|gif|svg|svgz|webp|avif|avifs|js|css|eot|ttf|otf|woff|woff2|html|json|webmanifest|m>
        add_header Cache-Control "public";
        add_header X-Frame-Options "SAMEORIGIN";
        expires +1y;
        if (!-f $request_filename) {
            rewrite ^/static/(versiond*/)?(.*)$ /static.php?resource=$2 last;
        }
    }
    location ~* .(zip|gz|gzip|bz2|csv|xml)$ {
        add_header Cache-Control "no-store";
        add_header X-Frame-Options "SAMEORIGIN";
        expires    off;

        if (!-f $request_filename) {
           rewrite ^/static/(versiond*/)?(.*)$ /static.php?resource=$2 last;
        }
    }
    if (!-f $request_filename) {
        rewrite ^/static/(versiond*/)?(.*)$ /static.php?resource=$2 last;
    }
    add_header X-Frame-Options "SAMEORIGIN";
}

Nothing in the error logs and nothing in var/report
Only errors is in web inspector:

tons of these errors:

...
Unable to resolve the source file for 'adminhtml/Magento/backend/en_US/**Magento_PageBuilder**/js/mass-converter/converter-pool-factory.js.map'

Another types of errors:

[Error] Failed to load resource: the server responded with a status of 404 (Not Found)  (delay-until.js.map, line 0)
[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (url.js.map, line 0)
[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (preview.js.map, line 0)
...

[Error] TypeError: undefined is not a function (near '...require.config...')
    Global Code (554108405e227c7a40e2a526ad6232230989cc88a42e1a512ee30edec609a401:26)
[Error] TypeError: Object is not a function (near '...require...')
    Global Code (554108405e227c7a40e2a526ad6232230989cc88a42e1a512ee30edec609a401:46)

I believe that because of this I am unable to save the category after using PageBuilder. I tried:

1. Clearing the cache
2. Redeploying
3. etc.

Any suggestions are welcome.