Facing issues while trying to use an API method

[#1]

I'm trying to use the upload_profile_image.json method, but every time I try to, it gives me this message:

Also, the snapshot button does not work. And when I see the Console in the Developer Tools, I see this:

Can someone help me solve this problem, please? I'm dealing with this for days now and I just don't know what do.

[ceber]

Which API are you calling?