SOLVED: Update to 10.9.7 failed and got worse

[paulc]

Maybe deactivate whatever this is and give it a whirl.

Code:

Emby.Server.Implementations.Updates.InstallationManager: Failed to deserialize the
plugin manifest retrieved from "https://github.com/adultmm/AdultMediaManager.git"
System.Text.Json.JsonException: '<' is an invalid start of a value. Path: $ | LineNumber:
7 | BytePositionInLine: 0.
---> System.Text.Json.JsonReaderException: '<' is an invalid start of a value.
LineNumber: 7 | BytePositionInLine: 0.

Remove that plugin. I think you can just pull that plugin folder out of the plugin directory.