I just got my computer back from the shop andi went on minecraft.net and got into my account then i got the new verson on minecraft and went to play it i typed all the right stuff then as i went to click play it toke me to a page that said error

I just got my computer back from the shop andi went on minecraft.net and got into my account then i got the new verson on minecraft and went to play it i typed all the right stuff then as i went to click play it toke me to a page that said error.