Intervention/image · error · Intervention\Image\Exceptions\AnalyzerException

Unable to analyze image colors, failed to transform color sp

Error message

Unable to analyze image colors, failed to transform color space

What it means

This FileNotReadableException is the last-resort guard in filePathFromSplFileInfoOrFail(): SplFileInfo::getRealPath() returned false even though the file existed and was readable a few lines earlier. realpath() fails when the canonical path cannot be resolved, which in practice means the file disappeared between the earlier checks and this call (a race condition), or a symlink loop/broken symlink chain prevents canonicalization.

Source

Thrown at src/Analyzers/DominantPaletteAnalyzer.php:113

        // palette has already a limit of k and is already sorted by cluster size
        return $palette;
    }

    /**
     * Transform color to flattened oklab color channel triples which can be used for clustering.
     *
     * @param Generator<ColorInterface> $colors
     * @throws AnalyzerException
     * @return array<array{float, float, float}>
     */
    private function clusterableColors(Generator $colors): array
    {
        $clusterable = [];
        foreach ($colors as $color) {
            $oklab = $color->toColorspace(Oklab::class);
            if (!$oklab instanceof OklabColor) {
                throw new AnalyzerException('Unable to analyze image colors, failed to transform color space');
            }

            $clusterable[] = [
                $oklab->lightness()->value(),
                $oklab->a()->value(),
                $oklab->b()->value(),
            ];
        }

        return $clusterable;
    }

    /**
     * Perform K-means clustering on Oklab value triples.
     *
     * @param array<array{float, float, float}> $points
     * @return array<array{centroid: array{float, float, float}, size: int}>
     */

View on GitHub (pinned to 5598b9e397)

Solutions

Retry the operation once after re-checking file_exists(), since the usual cause is a transient race
Remove whatever deletes/moves the file concurrently, or copy the file to a private temp path you control before processing it
Audit symlinks on the path (ls -l each segment) and break any loops or dangling chains
If open_basedir is active, ensure the file's real location is inside the allowed paths

Example fix

// before
$image = $manager->read(new SplFileInfo($sharedTempPath)); // another worker unlinks it mid-call

// after: work on a private copy so no other process can pull it away
copy($sharedTempPath, $private = tempnam(sys_get_temp_dir(), 'img'));
$image = $manager->read(new SplFileInfo($private));

Defensive patterns

Strategy: try-catch

Validate before calling

// Reduces but cannot eliminate the race
$path = $splFileInfo->getPathname();
if (!is_string($real = realpath($path))) {
    throw new \RuntimeException('Cannot resolve real path for: ' . $path);
}
$image = $manager->read(new \SplFileInfo($real));

Try / catch

use Intervention\Image\Exceptions\FileNotReadableException;

try {
    $image = $manager->read($file);
} catch (FileNotReadableException $e) {
    if (str_contains($e->getMessage(), 'Failed to read file')) {
        // realpath() lost the file: transient race or symlink loop — retry once or re-create the source
        usleep(100000);
        $image = $manager->read($file);
    }
}

Prevention

Copy shared/transient files into a private temp file before processing; only your code touches the copy
Never unlink temp files until the request/job that consumes them has fully finished
Avoid symlink chains in storage paths; prefer a single canonical storage root

When it happens

Trigger: Another process deletes or renames the file in the window between the is_readable() check and $splFileInfo->getRealPath(); symlink loops (a link pointing back into its own chain); open_basedir restrictions that make realpath refuse paths outside allowed directories; network mounts that drop mid-operation.

Common situations: Queue workers and web requests racing on the same temp file (one finishes first and unlinks it); cleanup jobs (tmpwatch, cron) removing uploads while they are processed; flaky NFS mounts where existence checks pass but resolution fails; symlinked storage directories with cyclic links created by deployment scripts.

Related errors

AI-assisted analysis of Intervention/image@5598b9e397 (2026-08-23). Data as JSON: /api/errors/c141813d8fbb5a40. Report an issue: GitHub.