Laravel/Lumen API Error Handleing

App\Exceptions\Handler.php

<?php 
/**
     * Render an exception into an HTTP response.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Exception  $exception
     * @return \Illuminate\Http\Response
     */
    public function render($request, Exception $exception)
    {
        if ($request->wantsJson()) {
            $response = [
                'message' => (string) $exception->getMessage(),
                'status'   => 400
            ];

            if ($exception instanceof HttpException) {
                $response['message'] = Response::$statusTexts[$exception->getStatusCode()];
                $response['status'] = $exception->getStatusCode();
            }

            if ($this->isDebugMode()) {
                $response['debug'] = [
                    'exception' => get_class($exception),
                    'trace' => $exception->getTrace()
                ];
            }
            return response()->json(['error' => $response], $response['status']);
        }
        return parent::render($request, $exception);
    }

    /**
     * Determine if the application is debug mode
     *
     * @return boolean
     */
    public function isDebugMode() : boolean
    {
        return (Boolean) env('APP_DEBUG');
    }