../images/uploads/fische_178.jpg isn't a valid image

  FILE: /homepages/6/d33861767/htdocs/3art/v2020/images/imgresize.php
  LINE: 36

    FILE: /homepages/6/d33861767/htdocs/3art/v2020/class/ImageTransform.php
    LINE: 236

      FILE: /homepages/6/d33861767/htdocs/3art/v2020/class/ImageResizeController.php
      LINE: 32