Error when adding extension: “Invalid value for content_scripts “[0].matches[0]: Missing scheme separator.”(Edge,Chrome)

Things I want to do

How to fix the error that occurs when trying to add a custom extension to Chrome or Edge, preventing the extension from being added.

Invalid value for content_scripts[0].matches[0]: Missing scheme separator.

The manifesto could not be loaded.

Detail

When attempting to register an extension with the following manifest file, the error ‘Invalid value for content_scripts’ occurs.[0].matches[0]I received the error message: ‘Missing scheme separator.’

{
  "name": "Sample",
  "version": "1",
  "manifest_version": 3,
  "content_scripts": [
    {
      "matches": [ "blog.marunokan.com/*" ],
      "js": ["sample.js"]
    }
  ]

}

reason

The cause is as stated in the message: the following line.

      "matches": [ "blog.marunokan.com/*" ],

The reason is that the specified URL does not have ‘https://’ or ‘http://’ at the beginning.

countermeasure

As stated in the cause, the following line

      "matches": [ "blog.marunokan.com/*" ],

Please make the following corrections.

      "matches": [ "https://blog.marunokan.com/*" ],

Result

I was able to successfully register it in my browser.

If you register it in Chrome, the following message will be displayed in the lower left corner of the screen.