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I'm having issue, calling jvm preset method in spring rest controller, I'm receiving class not found exception .

I have a multiplatform library. With 3 targets.

1- presets.jvm named backend, with kotlinOptions jvm Target = '1.8'

2- presets.android named android

3- presets.iosX64 named iosEmulator

For each module consuming the library I have added:
implementation project(':libraryname')

When running my android app I successfully see the platform specific message printed.

The same for ios.

But when my spring boot backend try to call the library method. I get a classnotfound exception .

1- I think the issue might be that it's see two jvm target (backend and android) and doesn't know which one to select? But in this case shouldn't gradle fail the build?

2- spring boot did not add the jar in uber.jar classpath even if it's as been added by as a gradle dependency? But in this case my import should not be accessible when I'm trying to build and launch the backend. 

I have specified the jvmTarget as java8 in the spring backend and the multi-platform library backend target.

Any idea what could be the issue? 