Images look strange after upload

Link goes to a 404 error.

If there is a problem with how content is displaying it is a theme related issue. Please visit the theme’s support page and ask the developers.

The link to the screenshot doesn’t work. Can you try again or explain what is strange about them?
I looked at your site, but I don’t see anything strange looking there, so I’m not sure what to tell you.

Hello https://kronenburg-appelgaard.nl/wp-content/uploads/Inkomen.jpg this is the link, the other image is gone.

Thanks all for the responce.
I figured it out:
On my pc there is a programm running Malwarebytes.
After shutting it down, the issue is solved!