Since you appear to be too lazy to read the linked wiki section that contains the answer I will post it here for you:
"In short: It was technically possible (but heavily discouraged) to use install2internal with older LibreELEC images. It is NOT POSSIBLE to use install2internal with AMLGX and running the script will either fail, or fail and break boot. To run LibreELEC from eMMC storage please purchase a supported "board" device."
Clear enough?
verry thanks