Since SDK 8.1.0 I regular get popups with the following message in VS Code:
[Error - 5:08:30 AM] Request textDocument/documentHighlight failed.
Message: Internal error.
Here is my VS Code version info:
Version: 1.98.2 (user setup)
Commit: ddc367ed5c8936efe395cffeec279b04ffd7db78...