java.util.concurrent.CompletionException: java.lang.RuntimeException: Sentinel calling getIsolate:org.dartlang.vm.service.element.Sentinel@12b48bcd

## What happened

🤷

## Version information

IntelliJ IDEA `2021.2.3` • Flutter plugin `io.flutter 63.0.3` • Dart plugin `212.5632`

Flutter 2.8.0 • channel stable • git@github.com:flutter/flutter
Framework • revision cf44000065 (9 days ago) • 2021-12-08 14:06:50 -0800
Engine • revision 40a99c5951
Tools • Dart 2.15.0

## Exception

null

```
java.util.concurrent.CompletionException: java.lang.RuntimeException: Sentinel calling getIsolate:org.dartlang.vm.service.element.Sentinel@12b48bcd
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:331)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:346)
at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1063)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088)
at io.flutter.inspector.EvalOnDartLibrary$4.received(EvalOnDartLibrary.java:305)
at org.dartlang.vm.service.VmService.forwardResponse(VmService.java:954)
at org.dartlang.vm.service.VmServiceBase.processResponse(VmServiceBase.java:619)
at org.dartlang.vm.service.VmServiceBase.processMessage(VmServiceBase.java:422)
at org.dartlang.vm.service.VmServiceBase$1.onMessage(VmServiceBase.java:86)
at de.roderick.weberknecht.WebSocketReceiver.run(WebSocketReceiver.java:65)
Caused by: java.lang.RuntimeException: Sentinel calling getIsolate:org.dartlang.vm.service.element.Sentinel@12b48bcd
... 6 more
```