Chevereto

This error occurs when PHP's zlib.output_compression is set to On in php.ini. The Chevereto updater calls ob_start('ob_gzhandler'), which conflicts with zlib output compression. To work around it, temporarily disable zlib.output_compression: in php.ini, set zlib.output_compression = Off, or in .htaccess add php_flag zlib.output_compression off. After completing the update, you can re-enable compression. This is a known bug (issue #107) awaiting a permanent fix.

The Chevereto API album_id parameter expects the encoded/public album ID (for example oHo), not the numeric database ID. Manually open the album in the browser and copy the ID from its URL, or open an image assigned to that album and note the album ID.

For automated uploads on a self-hosted instance, a temporary workaround is to look up the numeric album ID directly from the database and bypass ID decoding in app/legacy/routes/api.php. Comment out or remove this block around lines 176–178:

$albumId = $REQUEST['album_id'] ?? null;
if ($albumId !== null) {
    $albumId = decodeID($albumId);
}

You can then query the album table, for example:

SELECT id, name FROM chv_albums WHERE name = 'Your Album Name';

Pass the returned numeric id as the API upload album_id. This is a core-file modification and requires database access, so it carries security and upgrade-maintenance risks. The safer long-term solution is an official API endpoint that returns the encoded album ID.