Cannot solve Requests_Exception_Transport_cURL [ PHP & WordPress Error]

I’m getting “Undefined property: Requests_Exception_Transport_cURL::$status_code” error and failed to solve it.

    private function do_bulk_api_call( $endpoint, $data=array(), $version=0 ) {

        if( !$this->cmcapi['status'] )
            return false;

        $final_api_data = $bulk_requests = array();
        $options = get_option( 'cmcapi' );
        $version = $version ? $version : $this->cmcapi['version'];
        $bulk_url = $this->cmcapi['url'] . $version . $endpoint;

        if( $data && is_array($data) ):
        foreach ($data as $k => $chunk) {
            // TEMP condition
            // if( $k > 0 )
            //  continue;

            $bulk_requests[] = array(
                'type'      => 'GET',
                'timeout'   => 90,
                'url'       => $bulk_url,
                'headers'   => array(
                    'X-CMC_PRO_API_KEY' => $this->cmcapi['key'],
                ),
                'data'      => array( 'id' => implode(',',$chunk) )
            );
        }
        endif;
        
        $requests = Requests::request_multiple( $bulk_requests );
        foreach ($requests as $key => $response) {
            if($response->status_code !== 200) {
                continue;
            }

            $res_decoded = json_decode($response->body);
            $this->kte_shipment_api_results[$key] = array();
                $final_api_data = array_merge( (array) $final_api_data, (array) $response->data );
            
            if( !$res_decoded->status->error_code && is_object($res_decoded->data) ){
                $final_api_data = array_merge( (array) $final_api_data, (array) $res_decoded->data );
            }
        }

        return $final_api_data;
    }

By the way, this code is from other teammate and he is gone now so I cannot ask to him.