Hi,
Your Javascript error is related to an external javascript file (not an HikaShop one).
Due to that error ; it is highly possible that the rest of the javascript in the page is not processed and some features provided by javascript are not working (because not initialized).
If you can fix that javascript issue, it is possible that the link "my cart" will work also in your home page.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.