The third-party platform uploads the applet code for the authorized applet account and keeps reporting 47001

$extJson = array(
                'extAppid' => $appId,
                'ext' => array(
                    'attr1' => 'value1'
                ),
                'window' => array(
                        'backgroundColor'           => '#f8f8f8',
                        'navigationBarTextStyle'    => 'white',
                        "navigationBarTitleText"    => "好看吗啊",
                        'navigationBarBackgroundColor' => '#2b3b48'
                ),
            );

            $params = array(
                'template_id'   => 1,
                'user_version'  => "V.1.0",
                'user_desc'     => "测试代码指定",
                'ext_json'      => json_encode( $extJson, JSON_UNESCAPED_UNICODE )//这里就是问题所在 先要转换成json
            );