Problem with image path when uploading

Hi,

when I’m uploading a image the path of the new picture is wrong.

My WP set the path to “https://myimage-150×150.png/” (https://www.myDomain.com/upladPath/myimage-150×150.png/). It doesn’t set my domain and the path.

Can you tell me where I find this path declaration in the WP core files or how I can fix this issue?

Thanks,
dash