Help!! Custom Worker, Entangled Gold Mine Error, and Batrider Animation

[Tteodori Usemap]

When I try to place a custom worker unit in a custom entangled gold mine (right-click on the custom entangled gold mine after selecting a custom worker), an error message and sound are output. Is there a way to fix this? Of course, there is no problem with the placement itself or operation.

Additionally, there is an animation in the Troll Batrider animation that explodes after death when using the Unstable Concoction skill. Does anyone own the animation for that explosion? Please upload it if you have it.