Hikashop dashboard error

-- url of the page with the problem -- : accademiainfinita.it/administrator/index...ashop&ctrl=dashboard
-- HikaShop version -- : 4.4.1
-- Joomla version -- : 3.9.25
-- PHP version -- : 7.4.16
-- Browser(s) name and version -- : Brave V 1.22.71
-- Error-message(debug-mod must be tuned on) -- : b.split is not a function×

AND

Invalid row index NaN. Should be in the range [0-1].×

Hello,
in the dashboard the orders statistics is not showed anymore

see nimb.ws/NZ2nPo

Last time I checked 2 days ago it was working, I didn't update or installed anything else since then.

Thank you

Same here, with the exact same error "b.split is not a function" displayed instead of the graph.
It happens with both the v3 and the legacy dashboard.

-- HikaShop version -- : HikaShop Business 3.2.0