sory, why i found error like this for chart? and i cant display chart

can you explain, where my code is wrong?
sory, why i found error like this for chart? and i cant display chart

can you explain, where my code is wrong?
this is i got after my cuba trial is expired, but now i subscribe for 1 year, but still get this error
To work with both Maps add-on and Charts&Maps add-on your project should have the web-toolkit module. You can create it via studio: CUBA -> Advanced -> Manage modules -> Create 'web-toolkit' module.
Regards,
Gleb
Thanks gleb, its solve my problem
Best regards,
Dhanan