ObjectDisposedException: Cannot access a closed Stream.

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error is:

ObjectDisposedException: Cannot access a closed Stream.
System.IO.MemoryStream.CopyToAsync (System.IO.Stream destination, System.Int32 bufferSize, System.Threading.CancellationToken cancellationToken) (at :0)
System.Net.Http.StreamContent.SerializeToStreamAsync (System.IO.Stream stream, System.Net.TransportContext context) (at <7ebf3529ba0e4558a5fa1bc982aa8605>:0)
System.Net.Http.HttpContent+d__17.MoveNext () (at <7ebf3529ba0e4558a5fa1bc982aa8605>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.ConfiguredTaskAwaitable+ConfiguredTaskAwaiter.GetResult () (at :0)
System.Net.Http.HttpClientHandler+d__64.MoveNext () (at <7ebf3529ba0e4558a5fa1bc982aa8605>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () (at :0)
Algolia.Search.Http.TimeoutHandler+d__4.MoveNext () (at <0cbafcd89b5d4b7ab189d466e4933a48>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () (at :0)
System.Net.Http.HttpClient+d__47.MoveNext () (at <7ebf3529ba0e4558a5fa1bc982aa8605>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () (at :0)
Algolia.Search.Http.AlgoliaHttpRequester+d__1.MoveNext () (at <0cbafcd89b5d4b7ab189d466e4933a48>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () (at :0)
Algolia.Search.Transport.HttpTransport+d__5`2[TResult,TData].MoveNext () (at <0cbafcd89b5d4b7ab189d466e4933a48>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () (at :0)
Algolia.Search.Clients.SearchIndex+d__33`1[T].MoveNext () (at <0cbafcd89b5d4b7ab189d466e4933a48>:0)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) (at :0)
System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () (at :0)
Assets.Scripts.InputSearch+d__6.MoveNext () (at Assets/Scripts/InputSearch.cs:44)
--- End of stack trace from previous location where exception was thrown ---
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () (at :0)
System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.b__6_0 (System.Object state) (at :0)
UnityEngine.UnitySynchronizationContext+WorkRequest.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnitySynchronizationContext.cs:155)
UnityEngine.UnitySynchronizationContext:ExecuteTasks() (at C:/buildslave/unity/build/Runtime/Export/UnitySynchronizationContext.cs:105)

ValueChangeCheck 中に例外が発生したことをスタックトレースが報告している Assets/Scripts/InputSearch.cs:44 から始めます。リクエストが MemoryStream と HttpContent をどのように使用しているかを追跡し、Unity の例で閉じられたストリームによる失敗を再現します。検索リクエストが ObjectDisposedException を発生させなくなり、影響を受けた input-search フローが動作すれば完了です。

索引モデルが issue の本文から書いたものです。