The issue persists even after updating the animation_controller to the latest version, specifically concerning a false error indicating the non-existence of a variable. However, the problem arises only when variables are accessed before their creation.
For instance, with two animation_controllers: the first one checks a variable for equality to any value, and the second one creates a variable under a certain condition. If the condition in the second animation_controller is met, the variable is created, and the first animation_controller successfully detects its existence, returning true.
Nevertheless, despite this workaround, the error continues to manifest, likely due to peculiarities in the update process.
Thank you, the errors are really gone