Internal error

PHP Warning: getimagesize(/mnt/web103/a2/16/5356016/htdocs/msb2015/fs/autor/ahne_petra.jpg): failed to open stream: No such file or directory

ErrorException: "PHP Warning: getimagesize(ROOT/fs/autor/ahne_petra.jpg): failed to open stream: No such file or directory" in ROOT/wd/classes/Utils.php at line 871
#0 [internal function]: handle_errors(2, 'getimagesize(/m...', '/mnt/web103/a2/...', 871, Array)
#1 ROOT/wd/classes/Utils.php(871): getimagesize('/mnt/web103/a2/...')
#2 ROOT/wd/classes/Utils.php(893): Utils->getImgBoxInfo('/fs/autor/ahne_...', '160', '400', true)
#3 ROOT/wd/extensions/shop/classes/ShopViewController.php(188): Utils->getImgBoxTag('/fs/autor/ahne_...', '160', '400', false, true, NULL, NULL)
#4 ROOT/matthes/classes/WebsiteShopViewController.php(112): ShopViewController->postprocessDbObjectView(Object(View), Object(Author), Object(PageContext))
#5 ROOT/wd/classes/DbObjectDetailsController.php(121): WebsiteShopViewController->postprocessDbObjectView(Object(View), Object(Author), Object(PageContext))
#6 ROOT/wd/classes/DbObjectListController.php(233): DbObjectDetailsController->getPreparedItemView(Object(Author), Object(PageContext), 'details')
#7 ROOT/wd/classes/DbObjectListController.php(355): DbObjectListController->getPreparedItemView(Object(Author), Object(PageContext), 'details')
#8 ROOT/wd/classes/Controller.php(261): DbObjectListController->handle(Object(PageContext))
#9 ROOT/wd/classes/Controller.php(301): Controller->process(Object(PageContext))
#10 ROOT/wd/classes/Controller.php(318): Controller->renderComponent(Object(PageContext), Object(WebsiteDbObjectListController), 2, Array, Array)
#11 ROOT/wd/classes/Controller.php(243): Controller->renderComponent(Object(PageContext), Array, 'CONTENT', Array, Array)
#12 ROOT/index.php(56): Controller->process(Object(PageContext))
#13 {main}