bluez installation

cpi@clockworkpi:~$ sudo apt-get install bluez
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  pulseaudio-module-bluetooth
The following NEW packages will be installed:
  bluez
0 upgraded, 1 newly installed, 0 to remove and 3 not upgraded.
Need to get 811 kB of archives.
After this operation, 2978 kB of additional disk space will be used.
Get:1 http://debian-mirror.sakura.ne.jp/debian stretch/main armhf bluez armhf 5.43-2+deb9u1 [811 kB]
Fetched 811 kB in 2s (280 kB/s)
apt-listchanges: Can't set locale; make sure $LC_* and $LANG are correct!
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = (unset),
    LC_ALL = (unset),
    LC_TIME = "es_ES.UTF-8",
    LC_MONETARY = "es_ES.UTF-8",
    LC_ADDRESS = "es_ES.UTF-8",
    LC_TELEPHONE = "es_ES.UTF-8",
    LC_NAME = "es_ES.UTF-8",
    LC_MEASUREMENT = "es_ES.UTF-8",
    LC_IDENTIFICATION = "es_ES.UTF-8",
    LC_NUMERIC = "es_ES.UTF-8",
    LC_PAPER = "es_ES.UTF-8",
    LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
locale: Cannot set LC_ALL to default locale: No such file or directory
Selecting previously unselected package bluez.
(Reading database ... 79770 files and directories currently installed.)
Preparing to unpack .../bluez_5.43-2+deb9u1_armhf.deb ...
Unpacking bluez (5.43-2+deb9u1) ...
Processing triggers for systemd (232-25+deb9u9) ...
Processing triggers for man-db (2.7.6.1-2) ...
Processing triggers for dbus (1.10.26-0+deb9u1) ...
Setting up bluez (5.43-2+deb9u1) ...
Created symlink /etc/systemd/system/dbus-org.bluez.service → /lib/systemd/system/bluetooth.service.
Created symlink /etc/systemd/system/bluetooth.target.wants/bluetooth.service → /lib/systemd/system/bluetooth.service.
Processing triggers for dbus (1.10.26-0+deb9u1) ...
Processing triggers for systemd (232-25+deb9u9) ...