公众号调用二维码生成接口时会有跨域报错，不清楚您是否遇到？
Access to XMLHttpRequest at 'http://qr.topscan.com/api.php?text=http://grace.hcoder.net' from origin 'http://www.xxxxx.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource
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z***@qq.com
H5我也是一样的错误，小程序里没有报错。APP没有测