I notice the log contains
2025-03-12 - 13:25:29 [6]: [PYTHON JOB]: "Bootloader: grub (efi)"
2025-03-12 - 13:25:29 [6]: .. Running QList("grub-install", "--target=x86_64-efi", "--efi-directory=/boot/efi", "--bootloader-id=Manjaro", "--force")
2025-03-12 - 13:25:46 [6]: .. Target cmd: QList("grub-install", "--target=x86_64-efi", "--efi-directory=/boot/efi", "--bootloader-id=Manjaro", "--force") Exit code: 1 output:
Installing for x86_64-efi platform.
Could not add entry to BootOrder: No space left on device
grub-install: error: efibootmgr failed to register the boot entry: No such device or address.
This page has some suggestions of things to check for similar errors: