RuntimeException due to OkHttp Dispatcher thread method signature mismatch in Spring WebFlux environment

[llh4github]

Error Details:

Exception in thread "OkHttp Dispatcher" java.lang.NoSuchMethodError: 'void kotlinx.coroutines.CancellableContinuation.resume(java.lang.Object, kotlin.jvm.functions.Function3)'
	at okhttp3.coroutines.ExecuteAsyncKt$executeAsync$2$2.onResponse(ExecuteAsync.kt:46)
	at okhttp3.internal.connection.RealCall$AsyncCall.run(RealCall.kt:532)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Project Configuration:

• kotlinx.coroutines version matches aws.sdk.kotlin dependencies
• Compiles successfully but fails at runtime
• Occurs in Spring WebFlux reactive endpoints

Reproduction Steps:

1. Requires modifying entry class configuration
2. Full stack trace appears during HTTP request processing
3. Happens specifically when using OkHttp-based AWS SDK operations

Suspected Cause:
Version incompatibility between:

• kotlinx-coroutines-core
• okhttp3 runtime (provided by AWS SDK)
• Spring WebFlux reactive engine

Requested Assistance:

1. Confirm version compatibility matrix
2. Provide dependency resolution strategy
3. Suggest configuration adjustments for Spring WebFlux
4. Recommend version alignment approach

Attachments:

• Minimal reproducible project (requires build configuration adjustment)
  demo4aws.zip