为什么用suspendCoroutine包装此函数会导致无法在未密封的实例上执行此操作？

Question

我正在尝试用协同程序包装this ussd library。但是由于某些原因，当我用ussdController.send包装suspendCoroutine时，我得到了这个错误

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.tabsamo.ussdtest, PID: 29211
java.lang.IllegalStateException: Cannot perform this action on a not sealed instance.
    at android.view.accessibility.AccessibilityRecord.enforceSealed(AccessibilityRecord.java:699)
    at android.view.accessibility.AccessibilityRecord.getSource(AccessibilityRecord.java:188)
    at com.romellfudi.ussdlibrary.USSDService.getLeaves(USSDService.java:174)
    at com.romellfudi.ussdlibrary.USSDService.setTextIntoField(USSDService.java:96)
    at com.romellfudi.ussdlibrary.USSDService.send(USSDService.java:81)
    at com.romellfudi.ussdlibrary.USSDController.sendData(USSDController.java:92)
    at com.romellfudi.ussdlibrary.USSDController.send(USSDController.java:97)
    at com.tabsamo.ussdtest.MainActivity$callUSSD$1.invokeSuspend(MainActivity.kt:54)
    at com.tabsamo.ussdtest.MainActivity$callUSSD$1.invoke(Unknown Source:31)
    at com.tabsamo.ussdtest.MainActivity$callUSSD$2$responseInvoke$1.invokeSuspend(MainActivity.kt:67)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:32)
    at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:236)
    at android.os.Handler.handleCallback(Handler.java:789)
    at android.os.Handler.dispatchMessage(Handler.java:98)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6940)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

这是我的代码

fun callUSSD(context: Context) {
    val ussdController = USSDController.getInstance(context)
    val ussdCode = "*770#"
    val map = hashMapOf(
            "KEY_LOGIN" to HashSet(listOf<String>()),
            "KEY_ERROR" to HashSet(listOf<String>())
    )
    suspend fun send(data: String) = suspendCoroutine<Unit> { cont ->
        ussdController.send(data) { cont.resume(Unit) }
    }

    ussdController.callUSSDInvoke(ussdCode, map, object: USSDController.CallbackInvoke {
        override fun responseInvoke(message: String) {

            // this works
            // ussdController.send("1478") {
            //     ussdController.send("1") {}
            // }

            // but this does not work
            GlobalScope.launch(Dispatchers.Main) {
                send("1478")
                send("1")
            }

        }

        override fun over(message: String) {
            Toast.makeText(context, message, Toast.LENGTH_LONG).show()
        }
    });
}