when I execute the command sudo apt upgrade, the terminal showed the following message
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
libc6-dbg : Depends: libc6 (= 2.27-3ubuntu1.4) but 2.27-3ubuntu1.3 is installed
libc6-dev : Depends: libc6 (= 2.27-3ubuntu1.4) but 2.27-3ubuntu1.3 is installed
linux-image-4.15.0-126-generic : Depends: linux-modules-4.15.0-126-generic but it is not installable
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
and when i try sudo apt --fix-broken install I received the following answer
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
linux-headers-4.15.0-126 linux-headers-4.15.0-126-generic linux-headers-4.15.0-129 linux-headers-4.15.0-129-generic
linux-image-4.15.0-129-generic linux-modules-4.15.0-129-generic linux-modules-extra-4.15.0-129-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
libc6
Suggested packages:
glibc-doc
The following packages will be REMOVED:
linux-image-4.15.0-126-generic
The following packages will be upgraded:
libc6
1 upgraded, 0 newly installed, 1 to remove and 1 not upgraded.
6 not fully installed or removed.
Need to get 0 B/2 832 kB of archives.
After this operation, 8 419 kB disk space will be freed.
Do you want to continue? [Y/n] y
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
(Reading database ... 259024 files and directories currently installed.)
Preparing to unpack .../libc6_2.27-3ubuntu1.4_amd64.deb ...
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
dpkg: error processing archive /var/cache/apt/archives/libc6_2.27-3ubuntu1.4_amd64.deb (--unpack):
new libc6:amd64 package pre-installation script subprocess returned error exit status 1
Errors were encountered while processing:
/var/cache/apt/archives/libc6_2.27-3ubuntu1.4_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
