package shim-signed 1.47+15.4-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1

New install from USB no graphic version.
My 20.04 did crach (Nvidia 6Gb Titan) so i tested new 21.04 but was needed to install USB no graphic version.

ProblemType: Package
DistroRelease: Ubuntu 21.04
Package: shim-signed 1.47+15.4-0ubuntu2
ProcVersionSignature: Ubuntu 5.11.0-22.23-generic 5.11.21
Uname: Linux 5.11.0-22-generic x86_64
.proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
BootEFIContents:
 BOOTX64.CSV
 grub.cfg
 grubx64.efi
 mmx64.efi
 shimx64.efi
CasperMD5CheckResult: pass
Date: Sat Jun 26 12:51:18 2021
EFITables:
 jun 26 12:54:58 conny-flyg kernel: efi: EFI v2.31 by American Megatrends
 jun 26 12:54:58 conny-flyg kernel: efi: ESRT=0xdef5a818 ACPI=0xdd871000 ACPI 2.0=0xdd871000 SMBIOS=0xf04c0 MOKvar=0xd17f3000
 jun 26 12:54:58 conny-flyg kernel: secureboot: Secure boot disabled
 jun 26 12:54:58 conny-flyg kernel: esrt: Reserving ESRT space from 0x00000000def5a818 to 0x00000000def5a850.
 jun 26 12:54:58 conny-flyg kernel: secureboot: Secure boot disabled
ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2021-06-26 (0 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
Python3Details: /usr/bin/python3.9, Python 3.9.4, python3-minimal, 3.9.4-1
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.20.9ubuntu1
 apt 2.2.3
SecureBoot: 6 0 0 0 0
SourcePackage: shim-signed
Title: package shim-signed 1.47+15.4-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)