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

Unable to analyze image colors, failed to transform color…

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.

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.

Appendix: 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}>
     */

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