I run into a Javascript exception in my complex application: ```TypeError: this._this__u8e3s4__1.awa...

# getting-started

[Norbi]

I run into a Javascript exception in my complex application:

TypeError: this._this__u8e3s4__1.await_4rdzbx_k$ is not a function

The stack trace is useless, see image.
Do you have any recommendation how can I investigate this problem?
I use Kotlin 2.0.0.
Thanks.

[Norbi]

Now it fails on JVM as well with Exception in thread "main" java.lang.VerifyError: Bad type on operand stack
😞

[dmitriy.novozhilov]

Please report an issue to kotl.in/issue

[Norbi]

I tried to extract a reproducer from my complex application but I couldn't.
The error arised at a function with nested lambda expressions, calling functions with extension and context receivers.
The error message TypeError: this._this__u8e3s4__1.await_4rdzbx_k$ is not a function contained a single usable hint: "await".
So I refactored my related function which called Deferred.await() to not use context receiver and the error is gone (it is an extension function on Deferred, and it had a Raise<X> context receiver before, now it throws an exception instead).