Installer failing at bootloader

I have multiple drives in my system and have tried to install the bootloader to multiple different ones using the GUI installer, and get an error every time.

The paste log is here: https://termbin.com/a7zf

2024-09-21 - 00:04:20 [1]: ERROR: Installation failed: “Bootloader installation error”
2024-09-21 - 00:04:20 [6]: … - message: “Bootloader installation error”
2024-09-21 - 00:04:20 [6]: … - details: The bootloader could not be installed. The installation command

grub-install --target=i386-pc --recheck --force /dev/sda
returned error code 1.

No idea how to resolve this

What are the hardware specifications of your system. Is it a UEFI capable system or just BIOS? If its the former, you may need to disable CSM support.

Installing for i386-pc platform.
grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.
grub-install: error: filesystem `btrfs' doesn't support blocklists.
2024-09-21 - 00:04:20 [2]: WARNING: [PYTHON JOB]: "Command 'grub-install --target=i386-pc --recheck --force /dev/sda' returned non-zero exit status 1." 
2024-09-21 - 00:04:20 [6]: [PYTHON JOB]: "stdout:Installing for i386-pc platform.\ngrub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.\ngrub-install: error: filesystem `btrfs' doesn't support blocklists." 
2024-09-21 - 00:04:20 [6]: [PYTHON JOB]: "stderr:None" 

It appears to install on a GPT, while being using BIOS. Does this computer has a UEFI?
Do you maybe boot with legacy mode?