PostmarketOS on Samsung Galaxy Tab 4 7.0 bootlooping

Hey, i have been trying to install PostmarketOS onto my tab 4.7.0 for around 4 hours now, everytime it just starts bootlooping and giving unable to mount /data and unable to mount storage. happens after it says installing rootfs and updating partitioning details. sorry if that doesnt make sense.

Ive tried everything according to the wiki and i am at a lost. any help would be appreciated.