I updated my kernel to 5.4.0-42-genericafter that my docking station do not work anymore.
So I try to reinstall my drivers and get following message.

Verifying archive integrity...  100%   All good.

Uncompressing DisplayLink Linux Driver 5.2.14  100%  

DisplayLink Linux Software 5.2.14 install script called: install

Distribution discovered: Ubuntu 18.04.4 LTS

Installing

Configuring EVDI DKMS module

Registering EVDI kernel module with DKMS

Building EVDI kernel module with DKMS

ERROR (code 3): Failed to build evdi/5.2.14. Consult /var/lib/dkms/evdi/5.2.14/build/make.log for details...

The logs

DKMS make.log for evdi-5.2.14 for kernel 5.4.0-42-generic (x86_64)

Thu Jul 23 09:40:00 CEST 2020

make: getcwd: No such file or directory

make: *** No rule to make target 'all'.  Stop.

DKMS make.log for evdi-5.2.14 for kernel 5.4.0-42-generic (x86_64)

Thu Jul 23 09:40:03 CEST 2020

make KBUILD_VERBOSE=1 SUBDIRS=/var/lib/dkms/evdi/5.2.14/build SRCROOT=/var/lib/dkms/evdi/5.2.14/build CONFIG_MODULE_SIG= -C /lib/modules/5.4.0-42-generic/build modules

make[1]: Entering directory '/usr/src/linux-headers-5.4.0-42-generic'

make -f ./Makefile syncconfig

make -f ./scripts/Makefile.build obj=scripts/basic

rm -f .tmp_quiet_recordmcount

make -f ./scripts/Makefile.build obj=scripts/kconfig syncconfig

  flex -oscripts/kconfig/lexer.lex.c -L scripts/kconfig/lexer.l

/bin/sh: 1: flex: not found

scripts/Makefile.host:9: recipe for target 'scripts/kconfig/lexer.lex.c' failed

make[3]: *** [scripts/kconfig/lexer.lex.c] Error 127

make[3]: *** Waiting for unfinished jobs....

  bison -o scripts/kconfig/parser.tab.c --defines=scripts/kconfig/parser.tab.h -t -l scripts/kconfig/parser.y

/bin/sh: 1: bison: not found

scripts/Makefile.host:17: recipe for target 'scripts/kconfig/parser.tab.h' failed

make[3]: *** [scripts/kconfig/parser.tab.h] Error 127

Makefile:594: recipe for target 'syncconfig' failed

make[2]: *** [syncconfig] Error 2

Makefile:704: recipe for target 'include/config/auto.conf.cmd' failed

make[1]: *** [include/config/auto.conf.cmd] Error 2

make[1]: Leaving directory '/usr/src/linux-headers-5.4.0-42-generic'

Makefile:22: recipe for target 'all' failed

make: *** [all] Error 2

Has someone some solution for thie issue?

EDIT: The driver I installed
https://www.displaylink.com/downloads/ubuntu