Image styles that utilize core's ConvertImageEffect will change/append the image extension (for instance, source image of foo.jpeg may have a file extension of foo.jpeg.png in an image style that converts the type.)
Core's image module handles this like so:
// Don't try to generate file if source is missing.
if (!file_exists($image_uri)) {
// If the image style converted the extension, it has been added to the
// original file, resulting in filenames like image.png.jpeg. So to find
// the actual source image, we remove the extension and check if that
// image exists.
$path_info = pathinfo($image_uri);
$converted_image_uri = $path_info['dirname'] . DIRECTORY_SEPARATOR . $path_info['filename'];
if (!file_exists($converted_image_uri)) {
$this->logger->notice('Source image at %source_image_path not found while trying to generate derivative image at %derivative_path.', ['%source_image_path' => $image_uri, '%derivative_path' => $derivative_uri]);
return new Response($this->t('Error generating image, missing source file.'), 404);
}
else {
// The converted file does exist, use it as the source.
$image_uri = $converted_image_uri;
}
}
Add an image style that changes file type, and note the error generating the image on a local environment.
Adjust the FetchManager::fetch code to account for this scenario.
Fixed
2.1
Code
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Issue #3175045: Error retrieving images from styles that use...
Automatically closed - issue fixed for 2 weeks with no activity.