loads of 404 errors

Hello,

I’m getting loads of 404 errors for @2x images that all seem to be plugin images. Any idea what’s causing this please and is there a way to fix this?

Examples:

Failed to load resource: the server responded with a status of 404 (Not Found)
http://www.domain.com/wp-content/uploads/wpcf7_captcha/3018496297@2x.png

Failed to load resource: the server responded with a status of 404 (Not Found)
http://www.domain.com/wp-content/uploads/my_Logo@2x.gif

Failed to load resource: the server responded with a status of 404 (Not Found)
http://www.domain.com/wp-content/plugins/contact-form-7/images/ajax-loader@2x.gif

I’ve obviously changed the domain name above by the way

Thanks