Need your help!
I deactivated one by one plugin to find out which plugin caused my Checkout Page "blank page".
After deactivated WPSSO plugin, my WooCommerce checkout page show up again. To double confirmed problem, I reactivated WPSSO plugin, my WooCommerce checkout page "blank page" again. Re-deactivated WPSSO plugin, the WooCommerce checkout page show up immediately.
FYI, I had define constant true for WPSSO object cache, file cache and transient cache.