Using SlidesAsyncApi.startConvert fails with Deserialization Issue

[klein-artur]

So I am using version 24.9.0, in a spring boot environment with kotlin.

Calling the startConvert method is working, but the operations fails with the error message:

Deserialization of types without a parameterless constructor, a singular parameterized constructor, or a parameterized constructor annotated with 'JsonConstructorAttribute' is not supported. Type 'Aspose.Slides.Cloud.DTO.Export.ExportOptions'. Path: $.Options | LineNumber: 0 | BytePositionInLine: 37.

using the non async api it works.

There is really nothing special I do, see my code below.

val exportOptions = ImageExportOptions()
exportOptions.height = maxHeight
exportOptions.width = maxWidth

val operationId = api.startConvert(
    presentationBytes,
    ExportFormat.PNG,
    null,
    null,
    null,
    listOf(1),
    exportOptions,
)

while (true) {
    val status = api.getOperationStatus(operationId)
    val progress = status.progress?.let {
        it.stepIndex.toFloat() / it.stepCount.toFloat()
    } ?: 0F
    onProgress(progress)
    if (status.status == Operation.StatusEnum.FAILED) {
        // Log operation failed <-- This is where I read the error
    }
    if (status.status == Operation.StatusEnum.FINISHED) {
        // Fetch operation result
    }
    if (status.status == Operation.StatusEnum.CANCELED) {
        // Log operation cancelled
    }
    Thread.sleep(1000)
}

Do I do something wrong?