exception '9Exception' with message 'Assertion script !=nullptr' failed. Function: appendRuleToView in /build/grub-customizer-8aSQUM/grub-customizer-5.0.7/scr/main../Controller/MainController.hpp:1026

[Retro Helix]

The following error occurs when starting the application:

exception '9Exception' with message 'Assertion script !=nullptr' failed. Function: appendRuleToView in /build/grub-customizer-8aSQUM/grub-customizer-5.0.7/scr/main../Controller/MainController.hpp:1026

I got this error after upgrading Ubuntu to 17.10.

[Retro Helix (retrorelix)]

Bug is still present in 5.0.8.

[jean-christophe manciot (manciot-jeanchristophe)]

I have also experienced the same issue on Ubuntu cosmic 18.10 with Grub Customizer 5.0.8.
I have attached a screenshot.

[jean-christophe manciot (manciot-jeanchristophe)]

I have to add that this issue came up only after upgrading to linux 4.18.0-8.
GC was doing relatively fine before that upgrade.

[jean-christophe manciot (manciot-jeanchristophe)]

A workaround is to:
- remove all *_proxy scripts found in /etc/grub.d (or at least their 'x' bit)
- update-grub

The issue is then gone.

[riyasmp (riyasmp)]

Hi

I just installed grub-customizer on pop-os 20.04. Getting an error message "grub cfg dir not found". PLease see the attachment

[riyasmp (riyasmp)]

Also please fidn the initial dialogue box that appears when I try to open grub customizer after installation.

[riyasmp (riyasmp)]

Sorry forgot to give you the information regarding my booting partitions. I have a triple boot including windows 10, Manjaro and ubuntu 20.04. Manjaro was the last one to install.

[Ryan (someonewhoishere)]

Hey @Daniel

Getting this same message, though slightly different path

"

please Inform the author about this problem. The Following information could be helpful:

exception '9Exception'
 with message 'Assertion 'script != nullptr' failed. Function: appendRuleToView'

in /build/grub-customizer/src/grub-customizer-5.1.0/src/main/../Controller/MainController.hpp:1036

"

With the UI it states "Script updates found. Click save to apply the changes"!

Something is broke for sure :(

[Daniel Richter (danielrichter2007)]

There may be something wrong with /etc/grub.d/.script_sources.txt
Try to remove references that are not existing at /etc/grub.d

You could even delete the whole file, but then clean up old copies of script manually (for example of there's an 10_linux (added from the system upgrade), you can delete proxifiedScripts/linux and 10_linux-proxy. This is neccessary to avoid duplicates.

I hope this tip helps so you don't have to wait for an update.

[Kostas Sfirakis (kostassfirakis)]

Yeap the issue is still present on version 5.2.1 and it happened to me after kde neon distro upgrade, also there are duplicated entries on grub.

I got exception '9Exception'
with message 'Assertion `script != nullptr' failed. Function: appendRuleToView' in /build/grub-customizer-VULDrI/grub-customizer-5.2.1/src/maim/../ Controller/MainController.hpp:1036

All references in /etc/grub.d/.script_sources.txt exist in /etc/grub.d

.script_sources.txt contains

"current_name";"default_name"
"proxifiedScripts/linux";"10_linux"
"21_memtest86+";"20_memtest86+"
"proxifiedScripts/os-prober";"30_os-prober"
"proxifiedScripts/uefi-firmware";"30_uefi-firmware"

and in /etc/grub.d there are these files

00_header 20_linux_xen 30_os-prober_proxy 40_custom proxifiedScripts
05_debian_theme 20_memtest86+ 30_uefi-firmware 41_custom README
10_linux 21_memtest86+ 33_linux_proxy
10_linux_zfs 30_os-prober 35_fwupd

what should I check for the duplicates and what should I do about the 9Exception?

[Daniel Richter (danielrichter2007)]

That looks ok. Even if the files are missing, grub customizer can handle that. So I don't know, what's happening there.

Create a backup please and then remove these files step by step and tell which removal was required to fix the problem (with some file content):
- /etc/grub.d/.script_sources.txt
- /etc/grub.d/30_os-prober_proxy
- /etc/grub.d/33_linux_proxy
- /etc/grub.d/21_memtest86+
- /etc/grub.d/proxifiedScripts

[Kostas Sfirakis (kostassfirakis)]

Hello! Sorry for late reply but I fixed the issue by deleting some files. There definitely where something like duplicate files or extension files but I don't remember which exactly... I found a backup I had made and the current files I got now