Dashboard page not working

[Lemw]

Hi guys,

My prestashop has a problem, please help me to fix it. Thanks.

After installed prestashop, I had used the prestashop cleaner module to cleared the demo products and customer informations. Then the problem comes, when I look at the dashboard page, I can't see the visitors, sales, orders data, always show "0" in there, but in stats page, there are no problem.

Any hint?

ps: because the following modules are useless for me, and I had deleted it. Such as "block supplier", "statsbestmanufacturers", "statsbestsuppliers", would be because of this reason?