I have purchased Linode and migrate my magento 2 from old share hosting.
I installed vestacp and test new magento 2 installation. it work fine.
However, when I migrate my old magento 2 store and it doesnt work.
Please help me to fix the problem and help me to upgrade to the latest version v2.2.0.
Besides, please help to upgrade all extension and theme (I will provide files)
P.S. You need to show me how do you fix the problem. (steps by steps)