TW2 starting online session issue

Failed to start session:
Failed building JavaScript on retry: Failed compiling the bot program code: in file src/Backend/InterfaceToHost_Root.elm: Unknown bot interface version ID: ‘20210823’. This compiler only supports the following 2 versions: 2023_02_06, 2023_05_15

anyone with the same prob?

Such an error message can come up when loading a bot from last year.

This problem will not happen when you load bot e521f262ed: