This is a question related to my other question

I am following these instructions to build a Debian package out of gitlab management software. I got the following error

dpkg-buildpackage

dpkg-buildpackage: export CFLAGS from dpkg-buildflags (origin:

vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat

-Wformat-security dpkg-buildpackage: export CPPFLAGS from dpkg-buildflags (origin: vendor): -D_FORTIFY_SOURCE=2

dpkg-buildpackage: export CXXFLAGS from dpkg-buildflags (origin:

vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat

-Wformat-security dpkg-buildpackage: export FFLAGS from dpkg-buildflags (origin: vendor): -g -O2 dpkg-buildpackage: export

LDFLAGS from dpkg-buildflags (origin: vendor):

-Wl,-Bsymbolic-functions -Wl,-z,relro tail: cannot open `debian/changelog' for reading: No such file or directory

dpkg-buildpackage: error: tail of debian/changelog gave error exit

status 1

Any help with the above errors