Getting weird error installing Burg

Question

I tried installing Burg to make my dual boot look better. So, I followed these instructions up to the part where it says: "BURG found! Do you want to configure BURG instead of grub2?, click Yes.". Then I get this weird error:

burg-mkconfig couldn't be executed successfully. error message:
 Generating burg.cfg ...
/usr/sbin/burg-probe: error: cannot stat `/boot/burg/locale'.
No path or device is specified.
Try `/usr/sbin/burg-probe --help' for more information.

I don't really now how to use the terminal, so when I copy-pasted it with Ctrl+Shift+V nothing happened. When I clicked on the button "Environment settings", everything seems fine, except for the OUTPUT_DIR. Next to it is a warning sign and in the textfield there is: /boot/burg/burg.cfg.So apparently something isn't how it's supposed to be.

Does anyone know what I did wrong?

Suggested edit:

I ran this command :

 sudo add-apt-repository ppa:n-muench/burg -y && sudo add-apt-repository ppa:danielrichter2007/grub-customizer -y && sudo apt-get update && sudo apt-get install burg burg-themes grub-customizer

As far as I can remember no errors appeared. I run a BIOS system.

Edit 2: Another user suggested I'd run the command biosdecode. Here's the output:

BIOS32 Service Directory present.
    Revision: 0
    Calling Interface Address: 0x000F0010
PCI Interrupt Routing 1.0 present.
    Router ID: 00:1f.0
    Exclusive IRQs: None
    Compatible Router: 8086:3a16
    Slot Entry 1: ID 00:00, on-board
    Slot Entry 2: ID 00:04, on-board
    Slot Entry 3: ID 00:05, on-board
    Slot Entry 4: ID 00:06, on-board
    Slot Entry 5: ID 00:08, on-board
    Slot Entry 6: ID 00:09, on-board
    Slot Entry 7: ID 00:0a, on-board
    Slot Entry 8: ID 00:0d, on-board
    Slot Entry 9: ID 00:16, on-board
    Slot Entry 10: ID 00:1f, on-board
    Slot Entry 11: ID 00:1d, on-board
    Slot Entry 12: ID 00:1a, on-board
    Slot Entry 13: ID 00:1b, on-board
    Slot Entry 14: ID 00:1c, on-board
    Slot Entry 15: ID 07:00, slot number 32
    Slot Entry 16: ID 05:00, slot number 37
    Slot Entry 17: ID 00:01, on-board
    Slot Entry 18: ID 00:02, on-board
    Slot Entry 19: ID 00:03, on-board
    Slot Entry 20: ID 03:00, slot number 2
    Slot Entry 21: ID 00:07, on-board
    Slot Entry 22: ID 04:00, slot number 5
    Slot Entry 23: ID 08:00, slot number 3
    Slot Entry 24: ID 08:01, slot number 4
    Slot Entry 25: ID 00:19, on-board
    Slot Entry 26: ID 06:00, on-board
    Slot Entry 27: ID 02:00, on-board
    Slot Entry 28: ID 08:02, on-board
    Slot Entry 29: ID 01:00, on-board
PNP BIOS 1.0 present.
    Event Notification: Not Supported
    Real Mode 16-bit Code Address: F000:67D2
    Real Mode 16-bit Data Address: F000:0000
    16-bit Protected Mode Code Address: 0x000F67FA
    16-bit Protected Mode Data Address: 0x000F0000
ACPI 1.0 present.
    OEM Identifier: ACPIAM
    RSD Table 32-bit Address: 0xBF780000
SMBIOS 2.5 present.
    Structure Table Length: 3002 bytes
    Structure Table Address: 0x000F0700
    Number Of Structures: 79
    Maximum Structure Size: 189 bytes
`