Fitness Planner error

Hi I can’t see any training star in the fitness planner and an error message pop out. Can you let me know how to fix it please?

Let us know if you’re still seeing this error.

Screen Shot 2017-12-27 at 6

ah nuts! Have I done something wrong and caused this error message to appear? Do you have any advice as to what I could do to fix the problem?

Thank you for the help