I am trying to install mysql-server-5.5
by apt-get install mysql-server-5.5
and I see this error - Sub-process /usr/bin/dpkg returned an error code (1)
Output of sudo dpkg --configure -a
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.5; however:
Package mysql-server-5.5 is not installed.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mysql-server
Output of sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
mysql-server-5.5
Suggested packages:
tinyca mailx
The following NEW packages will be installed:
mysql-server-5.5
0 upgraded, 1 newly installed, 0 to remove and 60 not upgraded.
1 not fully installed or removed.
Need to get 0 B/1981 kB of archives.
After this operation, 32.7 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_CTYPE = "UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Preconfiguring packages ...
(Reading database ... 95180 files and directories currently installed.)
Preparing to unpack .../mysql-server-5.5_5.5.46-0ubuntu0.14.04.2_amd64.deb ...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Aborting downgrade from (at least) 5.6 to 5.5.
If are sure you want to downgrade to 5.5, remove the file
/var/lib/mysql/debian-*.flag and try installing again.
dpkg: error processing archive /var/cache/apt/archives/mysql-server-5.5_5.5.46-0ubuntu0.14.04.2_amd64.deb (--unpack):
subprocess new pre-installation script returned error exit status 1
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Errors were encountered while processing:
/var/cache/apt/archives/mysql-server-5.5_5.5.46-0ubuntu0.14.04.2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
Thanks for any help.