octobercms/october · error · SystemException

Unable to find content fieldset definition with UUID of '{$u

Error message

Unable to find content fieldset definition with UUID of '{$uuid}'.

What it means

Error "Unable to find content fieldset definition with UUID of '{$uuid}'." thrown in octobercms/october.

Source

Thrown at modules/tailor/classes/BlueprintModel.php:187

        if (!$fieldset) {
            $fieldset = $this->getContentFieldsetDefinition();
        }

        return $fieldset;
    }

    /**
     * getContentFieldsetDefinition
     */
    public function getContentFieldsetDefinition(): Fieldset
    {
        $uuid = $this->getBlueprintUuid();

        $fieldset = BlueprintIndexer::instance()->findContentFieldset($uuid);

        if (!$fieldset) {
            throw new SystemException("Unable to find content fieldset definition with UUID of '{$uuid}'.");
        }

        return $fieldset;
    }

    /**
     * makePageUrlParams returns parameters used when linking to this record as a page
     */
    public function makePageUrlParams(): array
    {
        return [
            'id' => $this->id,
            'code' => $this->code,
            'slug' => $this->slug,
            'fullslug' => $this->fullslug
        ];
    }
}

View on GitHub (pinned to b608633a7e)

When it happens

Trigger: Thrown at modules/tailor/classes/BlueprintModel.php:187 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of octobercms/october@b608633a7e (2026-08-21). Data as JSON: /api/errors/f359d5b261b7798d. Report an issue: GitHub.