ユーザーが LWC デザイナーに移動して LWC コンポーネントを選択すると、 「Get Bundles Error: Data Clone Error: Failed to execute ‘postMessage’ on ‘Window’: [object Object] could not be cloned」というエラーが表示される。
[設定] --> [セッション設定] --> [Lightning Web セキュリティ] の [Lightning Web コンポーネント用セキュリティの使用] 設定を無効にします。
ブラウザのキャッシュを空にし、ハード再読み込みを実行します。
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000393890
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