wordpress - 来自 API 的 Coinbase Commerce Woocommerce 错误响应：缺少必需参数：pricing_type

Question

将 Coinbase Commerce 集成到我的 Wordpress Woocommerce 网站，从昨天开始一切正常。当客户点击“Proceed to Coinbase”按钮完成购买时，网站显示“错误处理结帐。请重试。”

我登录了 Coinbase Commerce 插件，我可以看到错误是：

2018-09-25T10:57:06+00:00 INFO Coinbase Request Args for charges: Array
(
    [name] => DomainName
    [description] => some description
    [pricing_type] => fixed_price
    [local_price] => Array
        (
            [amount] => 3000.00
            [currency] => USD
        )

    [metadata] => Array
        (
            [order_id] => 438
            [order_key] => wc_order_5ba994a3a976c
        )

    [redirect_url] => https://example.com/checkout/order-received/438/?key=wc_order_5ba994a3a976c
)

2018-09-25T10:57:07+00:00 INFO Error response from API: Required parameter missing: pricing_type

我不知道该怎么办，我需要改变什么来解决这个问题..