Grub rescue (error: unknown filesystem)

Everything working well until i tried to partion my 240Gb SSD…i was trying to create 20Gb of partition from my 214Gb current root partition…and all suddenly not working and when reboot, here i am work ‘Grub Rescue’ with error : unknown filesystem.
Can anyone help fast…

it was not all suddenly… you resized/moved partitions and now you are surprised that your system is botched… you need to boot into manjaro live session and from there chroot:
sudo manjaro-chroot -a
and then reinstall grub - if you are running bios use the commands for bios, if you are uefi,. use commands for uefi …

Thanks for quick response…
Present i have arch bootable pendrive…
What should i do now…
And i am using uefi…

the same except the manjaro-chroot comand wont work with non manjaro iso… so you have to chroot manually … and then reinstall your uefi following the link… and hopefully you botched only your grub, and not your actuall installation