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[ Solved ] I can't change Disk Encryption password

I tried the following

sudo cryptsetup luksChangekey /dev/nvme0n1p3 < new passphrase > 

It then asks for the Sudo password, then asks for the old passphrase, but then it prints this error message

Failed to open key file.

what went wrong ?

Edit: turns out using GNOME Disks is way more straightforward.. 😅, thank you all

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