diff -Nru pure-ftpd-1.0.49/debian/changelog pure-ftpd-1.0.49/debian/changelog
--- pure-ftpd-1.0.49/debian/changelog	2020-02-27 09:26:33.000000000 +0000
+++ pure-ftpd-1.0.49/debian/changelog	2024-03-21 20:13:01.000000000 +0000
@@ -1,3 +1,9 @@
+pure-ftpd (1.0.49-4ubuntu0.1) focal; urgency=medium
+
+  * Remove doc symlink to fix upgrade error. (LP: #1876597)
+
+ -- Sudip Mukherjee <sudipm.mukherjee@gmail.com>  Thu, 21 Mar 2024 20:13:01 +0000
+
 pure-ftpd (1.0.49-4) unstable; urgency=medium
 
   * Fix uninitialized pointer vulnerability in the diraliases linked list: CVE-2020-9274 (Closes: #952666)
diff -Nru pure-ftpd-1.0.49/debian/control pure-ftpd-1.0.49/debian/control
--- pure-ftpd-1.0.49/debian/control	2020-02-27 09:26:33.000000000 +0000
+++ pure-ftpd-1.0.49/debian/control	2024-02-29 11:06:07.000000000 +0000
@@ -1,7 +1,8 @@
 Source: pure-ftpd
 Section: net
 Priority: optional
-Maintainer: Stefan Hornburg (Racke) <racke@linuxia.de>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Stefan Hornburg (Racke) <racke@linuxia.de>
 Build-Depends: debhelper (>= 5), libpam-dev, libcap2-dev [!kfreebsd-i386 !kfreebsd-amd64 !hurd-i386], libldap2-dev, default-libmysqlclient-dev, libpq-dev, libsodium-dev, libssl-dev, openssl (>= 0.9.6), po-debconf
 Build-Conflicts: libmysqlclient10-dev
 Standards-Version: 4.0.0
diff -Nru pure-ftpd-1.0.49/debian/pure-ftpd-ldap.maintscript pure-ftpd-1.0.49/debian/pure-ftpd-ldap.maintscript
--- pure-ftpd-1.0.49/debian/pure-ftpd-ldap.maintscript	1970-01-01 01:00:00.000000000 +0100
+++ pure-ftpd-1.0.49/debian/pure-ftpd-ldap.maintscript	2024-03-21 20:12:06.000000000 +0000
@@ -0,0 +1 @@
+symlink_to_dir /usr/share/doc/pure-ftpd-ldap pure-ftpd-common 1.0.49-4ubuntu0.1~
diff -Nru pure-ftpd-1.0.49/debian/pure-ftpd.maintscript pure-ftpd-1.0.49/debian/pure-ftpd.maintscript
--- pure-ftpd-1.0.49/debian/pure-ftpd.maintscript	1970-01-01 01:00:00.000000000 +0100
+++ pure-ftpd-1.0.49/debian/pure-ftpd.maintscript	2024-03-21 20:12:20.000000000 +0000
@@ -0,0 +1 @@
+symlink_to_dir /usr/share/doc/pure-ftpd pure-ftpd-common 1.0.49-4ubuntu0.1~
diff -Nru pure-ftpd-1.0.49/debian/pure-ftpd-mysql.maintscript pure-ftpd-1.0.49/debian/pure-ftpd-mysql.maintscript
--- pure-ftpd-1.0.49/debian/pure-ftpd-mysql.maintscript	1970-01-01 01:00:00.000000000 +0100
+++ pure-ftpd-1.0.49/debian/pure-ftpd-mysql.maintscript	2024-03-21 20:12:32.000000000 +0000
@@ -0,0 +1 @@
+symlink_to_dir /usr/share/doc/pure-ftpd-mysql pure-ftpd-common 1.0.49-4ubuntu0.1~
diff -Nru pure-ftpd-1.0.49/debian/pure-ftpd-postgresql.maintscript pure-ftpd-1.0.49/debian/pure-ftpd-postgresql.maintscript
--- pure-ftpd-1.0.49/debian/pure-ftpd-postgresql.maintscript	1970-01-01 01:00:00.000000000 +0100
+++ pure-ftpd-1.0.49/debian/pure-ftpd-postgresql.maintscript	2024-03-21 20:12:45.000000000 +0000
@@ -0,0 +1 @@
+symlink_to_dir /usr/share/doc/pure-ftpd-postgresql pure-ftpd-common 1.0.49-4ubuntu0.1~
diff -Nru pure-ftpd-1.0.49/debian/rules pure-ftpd-1.0.49/debian/rules
--- pure-ftpd-1.0.49/debian/rules	2020-02-27 09:26:33.000000000 +0000
+++ pure-ftpd-1.0.49/debian/rules	2024-03-21 19:55:05.000000000 +0000
@@ -110,14 +110,9 @@
 
 # install docs and changelogs
 	dh_installdocs -ppure-ftpd-common --exclude=Windows --exclude=MacOS AUTHORS HISTORY THANKS README* pureftpd.schema
+	dh_installdocs -Npure-ftpd-common --exclude=Windows --exclude=MacOS
 	dh_installchangelogs -p pure-ftpd-common ChangeLog
 
-# put all docs in /usr/share/doc/pure-ftpd-common and provide symlinks for other packages
-	for suffix in "" -ldap -mysql -postgresql; do \
-		install -d debian/pure-ftpd$$suffix/usr/share/doc; \
-		ln -s pure-ftpd-common debian/pure-ftpd$$suffix/usr/share/doc/pure-ftpd$$suffix ; \
-	done
-
 # pam and init
 	install -p -m644 debian/pam debian/pure-ftpd-common/etc/pam.d/pure-ftpd
 	dh_installinit