x-frame-options | Express middleware to add an X-Frame-Options | Runtime Evironment library

I am trying to effectively make a Reddit clone just for practice with Django and I am trying to set up my upvote/downvote system with just a simple integer(upvote adds one, downvotes subtract one) however when I hit my "upvote" or "downvote" buttons it gives me the error 'str' object has no attribute 'get'. I have no idea what is causing this and all of the other answers with this error were not at all related, any help would be awesome. Full TraceBack:

I have 2 step auth fetching a Bearer token with which I am automatically populating a environmental variable {{authToken}} for use in a GET request. The GET request is correctly called with the token but I get a 401 returned thus -

I'm getting the following response, while 400 error occurs.

I am getting a 400 error on a POST request in InteliJ/Java/RestAssured but not in Postman, so can anyone advise where I am getting it wrong please First Postman

I'm calling through Axios a PHP script checking whether a URL passed to it as a parameter can be embedded in an iframe. That PHP script starts with opening the URL with $_GET[].

Strangely, a page with cross-origin-opener-policy: same-origin (like https://twitter.com/) can be opened with $_GET[], whereas a page with Referrer Policy: strict-origin-when-cross-origin (like https://calia.order.liven.com.au/) cannot.

I don't understand why, and it's annoying because for the pages that cannot be opened with $_GET[] I'm unable to perform my checks on them - the script just fails (meaning I get no response and the Axios call runs the catch() block).

So basically there are 3 types of pages: (1) those who allow iframe embeddability, (2) those who don't, and (3) the annoying ones who not only don't but also can't even be opened to perform this check.

Is there a way to open any page with PHP, and if not, what can I do to prevent my script from failing after several seconds?

PHP script:

The following response header doesn't set the cookie in browser:

I have the following structure of Razor pages in my project:

Most of the content is available in the Index page. I am working on my local IIS on the localhost. When I type the localhost address in my browser, the Index page is shown as supposed. However, if I type https://localhost:44352/Logout in order to open the Logout page, it calls the OnGet method of the Index page and opens that page instead of calling the OnGet method of the Logout page.

Here is the OnGet method of the Index page:

I want to upload a video to server by jQuery ajax on my browser. this is my request :

I am getting this error on my django project: