Got "MODSIGN: Couldn't get UEFI db list" warning when I start my laptop

[Compiler]

Screenshot of problem: https://imgur.com/dMDgedB

Reported this issue in reddit (r/ubuntu): https://www.reddit.com/r/Ubuntu/comments/bori8o/some_daily_warning_i_face_in_ubuntu_1904_i_dont/

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-15-generic 5.0.0-15.16
ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6
Uname: Linux 5.0.0-15-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: pranav 1927 F.... pulseaudio
 /dev/snd/controlC0: pranav 1927 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Wed May 15 08:27:25 2019
HibernationDevice: RESUME=UUID=09e25397-4a2c-4fb0-a605-a7013eecb59c
MachineType: Dell Inc. Inspiron 5548
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-15-generic root=UUID=aad43495-2006-41af-bcb1-f91673ac405e ro quiet splash acpi_backlight=vendor
RelatedPackageVersions:
 linux-restricted-modules-5.0.0-15-generic N/A
 linux-backports-modules-5.0.0-15-generic N/A
 linux-firmware 1.178
SourcePackage: linux
StagingDrivers: r8188eu
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:

dmi.bios.date: 05/15/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0FFJC4
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A09
dmi.modalias: dmi:bvnDellInc.:bvrA09:bd05/15/2018:svnDellInc.:pnInspiron5548:pvrA09:rvnDellInc.:rn0FFJC4:rvrA00:cvnDellInc.:ct8:cvrA09:
dmi.product.name: Inspiron 5548
dmi.product.sku: 0641
dmi.product.version: A09
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[GUSTAVO ALVES ANTONIO DOS SANTOS (gutofox07)]

Ward