The following NEW packages will be installed:
  mythtv-database
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/36.2 kB of archives.
After this operation, 66.6 kB of additional disk space will be used.
Preconfiguring packages ...
Selecting previously unselected package mythtv-database.
(Reading database ... 122123 files and directories currently installed.)
Preparing to unpack .../mythtv-database_29.1+fixes20180603.git1777cc4425-dmo1_all.deb ...
Unpacking mythtv-database (29.1+fixes20180603.git1777cc4425-dmo1) ...
Setting up mythtv-database (29.1+fixes20180603.git1777cc4425-dmo1) ...
Failed to connect to database: Access denied for user 'root'@'louis-server.lan' (using password: YES) at -e line 5, <> line 1.
Failed to connect to database: Access denied for user 'root'@'louis-server.lan' (using password: YES) at -e line 5, <> line 1.
dpkg: error processing package mythtv-database (--configure):
 installed mythtv-database package post-installation script subprocess returned error exit status 255
Errors were encountered while processing:
 mythtv-database
E: Sub-process /usr/bin/dpkg returned an error code (1)