Can somebody help me please, ive been stucking for a long time.. all search got same answer, run the mount commands. but when i reached the grub-install step, in never work, keep telling error about "boot0000" and not enought space (didnt tell which partition but my efi partition for kali is 1gb aready, is it not enough?

grub-install: warning: Cannot set EFI variable Boot0000.
grub-install: warning: efivarfs_set_variable: writing to fd 6 failed: No space left on device.
grub-install: warning: _efi_set_variable_mode: ops->set_variable() failed: No space left on device.
grub-install: error: failed to register the EFI boot entry: No space left on device.

this is the errors when i run the line "grub-install".. anybody can help please?