VirtualBox not available after upgrade to Lubuntu 20.4

I've upgraded recently to above mentioned distribution, and after upgrade, I try to run VirtualBox, but get the following :

Please reinstall the kernel module by executing

'/sbin/vboxconfig'

as root.

where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.

After running vboxconfig (/sbin/vboxconfig), the build error is the following:

 Building the main VirtualBox module.
   2 │ Error building the module:
   3 │ make V=1 CONFIG_MODULE_SIG= -C /lib/modules/5.4.0-25-generic/build SUBDIRS=/tmp/vbox.0 SRCROOT=/tmp/vbox.0 -j4 modules
   4 │ make[1]: warning: -j4 forced in submake: resetting jobserver mode.
   5 │ make -f ./scripts/Makefile.build obj=arch/x86/entry/syscalls all
   6 │ make -f ./scripts/Makefile.build obj=scripts/basic
   7 │ set -e; mkdir -p include/config/; trap "rm -f include/config/.kernel.release.tmp" EXIT; { echo "5.4.30$(sh ./scripts/setlocalversion .)"; } > include/config/.kernel.release.tmp; if [ ! -r include/config/kernel.release ] || ! cmp
       │ -s include/config/kernel.release include/config/.kernel.release.tmp; then : ' UPD include/config/kernel.release'; mv -f include/config/.kernel.release.tmp include/config/kernel.release; fi
   8 │ make -f ./scripts/Makefile.asm-generic obj=arch/x86/include/generated/uapi/asm \
   9 │ generic=include/uapi/asm-generic
  10 │ rm -f .tmp_quiet_recordmcount
  11 │ set -e; mkdir -p include/generated/uapi/linux/; trap "rm -f include/generated/uapi/linux/.version.h.tmp" EXIT; { echo \#define LINUX_VERSION_CODE 328734; echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; }
       │ > include/generated/uapi/linux/.version.h.tmp; if [ ! -r include/generated/uapi/linux/version.h ] || ! cmp -s include/generated/uapi/linux/version.h include/generated/uapi/linux/.version.h.tmp; then : ' UPD include/generate
       │ d/uapi/linux/version.h'; mv -f include/generated/uapi/linux/.version.h.tmp include/generated/uapi/linux/version.h; fi
  12 │ make -f ./scripts/Makefile.build obj=arch/x86/tools relocs
  13 │ rm -f include/linux/version.h
  14 │ make -f ./scripts/Makefile.build obj=scripts/dtc
  15 │ make -f ./scripts/Makefile.asm-generic obj=arch/x86/include/generated/asm \
  16 │ generic=include/asm-generic
  17 │ make[2]: *** No rule to make target 'arch/x86/tools/relocs_32.c', needed by 'arch/x86/tools/relocs_32.o'. Stop.
  18 │ make[1]: *** [arch/x86/Makefile:232: archscripts] Error 2
  19 │ make[1]: *** Waiting for unfinished jobs....
  20 │ make: *** [/tmp/vbox.0/Makefile.include.footer:106: vboxdrv] Error 2

Any help on how to fix this problem is appreciated. Thanks.