package nvidia-340 340.107-0ubuntu0.18.04.1 failed to install/upgrade: new nvidia-340 package pre-installation script subprocess returned error exit status 2

couldn't divert many libGL*.so soft pointers

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: nvidia-340 340.107-0ubuntu0.18.04.1
ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
Uname: Linux 4.15.0-38-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.9-0ubuntu7.4
AptOrdering:
 nvidia-340:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
Date: Wed Oct 24 15:35:45 2018
ErrorMessage: new nvidia-340 package pre-installation script subprocess returned error exit status 2
Python3Details: /usr/bin/python3.6, Python 3.6.6, python3-minimal, 3.6.5-3ubuntu1
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.3ubuntu0.1
SourcePackage: nvidia-graphics-drivers-340
Title: package nvidia-340 340.107-0ubuntu0.18.04.1 failed to install/upgrade: new nvidia-340 package pre-installation script subprocess returned error exit status 2
UpgradeStatus: Upgraded to bionic on 2018-08-04 (81 days ago)
modified.conffile..etc.modprobe.d.nvidia-340.conf: [deleted]