Error: "Something unexpected happened" on MIRAI training app

This is a general error message which can have several causes. Therefore, please proceed as follows:

1. Check whether the safety stop of the UR robot has activated and release the UR again if necessary.
2. Restart all system components. 
3. Check all cable connections and if cables are not damaged.
4. If the problem persists, you may be using a MIRAI training app version that is not compatible with the MIRAI Control Box. Please check this article: Which MIRAI version fits which MIRAI training app?

If the problem could not be solved, please contact Customer Support.