iOS 模拟器调试的时候，经常出现白屏的情况

[bingoran]

iOS 模拟器调试的时候，经常出现白屏的情况
此时 pageName 为 null

[I][Thresh] Flutter call MethodChannel_Flutter_call_JS: methodChannel_flutter_call_js
arguments: {
contextId = 5;
method = ready;
params = "{"pageName":null,"params":{"contextId":"5"},"jsContextId":"5"}";
}