H5 application fails to load with RPC 7000 series errors

Problem description

When you open an H5 application on an iOS or Android client, an error page appears with the message: System busy. Please try again later.

Troubleshooting

Check the console output logs for Remote Procedure Call (RPC) 7000 series errors, such as:

2020-03-10 10:51:41.883119+0800 Demo[4765:231933] alipay.client.getUnionResource resp:{
    "Content-Length" = 0;
    Date = "Tue, 10 Mar 2020 02:51:41 GMT";
    "Strict-Transport-Security" = "max-age=31536000";
    "result-memo" = "%E9%AA%8C%E7%AD%BE%E7%9A%84%E5%8F%82%E6%95%B0%E4%B8%8D%E5%A4%9F%E3%80%82";
    "result-status" = 7001;
    "result-tips" = "%E7%AD%BE%E5%90%8D%E9%AA%8C%E8%AF%81%E5%A4%B1%E8%B4%A5%E3%80%82";
}

Solution

This error indicates that the RPC request verification has failed. This failure is caused by incorrect signature data from the client-side Security Guard.

First, confirm that the configuration file downloaded from the mPaaS console is correct and complete.

• For iOS clients, use the mPaaS Plugin to re-import the cloud data.

• For Android clients, replace the .config file in the project.

If necessary, you can use the plugin to regenerate the Security Guard image.