Variables not substituted

[audunru]

        Log::channel($this->channel)->warning('CSP violation: {directive} blocked {url}', [
            'directive' => $report->body->effectiveDirective,
            'url' => $report->body->blockedURL,
            'page' => $report->url,
        ]);

shows up as CSP violation: {directive} blocked {url} in logs.