Grub : Ubuntu 20.04 Dual boot with Phoenix OS

I've downloaded Phoenix OS and extracted it to root folder as per the community guidelines.

I've added grub entry as following :

menuentry “PhoenixOS-ROC” {
linux /PhoenixOS-ROC/kernel root=/dev/ram0 androidboot.hardware=android_x86_64 androidboot.selinux=permissive quiet SRC=/PhoenixOS-ROC DATA=/data VGA=788
initrd /PhoenixOS-ROC/initrd.img
}

Everything seems fine as per the community guidelines and I've double-checked every step.

But, I am getting the following error while I select "PhoenixOS-ROC" in the grub menu on restart.

The ntfs partitions /dev/block/nvme0 cannot be mounted, error number is 18. Found at /dev/nvme0n1p1

Following are the fdisk -l result :

Disk /dev/nvme0n1: 476.96 GiB, 512110190592 bytes, 1000215216 sectors
Disk model: SAMSUNG MZVLW512HMJP-000L2
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 7B54F26C-EFE6-4F95-A87C-CABB2EE1544B
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 976777215 976775168 465.8G EFI System
/dev/nvme0n1p2 976777216 978731007 1953792 954M EFI System
/dev/nvme0n1p3 978731008 1000214527 21483520 10.3G Linux swap

No idea what I am missing, Please suggest.

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