snapcraft search: 'ascii' codec can't encode character '\xae' in position 40: ordinal not in range(128)

[XiaoGuo, Liu]

I cannot successfully compile the mosquitto example code at Ubuntu Intel desktop.

https://github.com/snapcore/snapcraft/tree/master/demos/mosquitto

However, I cannot compile it successfully on dragonboard (under classic).

(classic)liu-xiao-guo@localhost:~/apps/mosquitto$ snapcraft
"grade" property not specified: defaulting to "stable"
DEPRECATED: Found a "/" in the name of the 'mqtt-paho/python3' part
DEPRECATED: The 'python3' plugin's functionality has been replaced by the 'python' plugin, and it will soon be removed.
'ascii' codec can't encode character '\u29f8' in position 49: ordinal not in range(128)

When I run snapcraft search on dragonboard, and it shows:

(classic)liu-xiao-guo@localhost:~$ snapcraft search
PART NAME DESCRIPTION
checkbox Part that supplies the latest stable version of the Checkbox t...
checkbox-dev Part that supplies the latest stable version of the Checkbox t...
checkbox-ng-dev Part that supplies the latest stable version of the Checkbox t...
checkbox-support-dev Part that supplies the latest stable version of the Checkbox t...
curl A tool and a library (usable from many languages) for client s...
desktop-glib-only Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop-gtk2 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop-gtk3 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop-qt4 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop-qt5 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop-ubuntu-app-platform Helpers for qt5 minimal launchers. This one is for ubuntu-app-...
desktop/glib-only Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop/gtk2 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop/gtk3 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop/qt4 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
desktop/qt5 Helpers for gtk2, gtk3, qt4 and qt5 or glib minimal launchers.
dnsmasq Network infrastructure swiss-army knife
ffmpeg This sets up ffmpeg for projects.
gtkconf This sets up the GTK environment for GTK-based projects
indicator-gtk2 Parts to show app-indicators for gtk2, gtk3, qt4 and qt5.
indicator-gtk3 Parts to show app-indicators for gtk2, gtk3, qt4 and qt5.
indicator-qt4 Parts to show app-indicators for gtk2, gtk3, qt4 and qt5.
indicator-qt5 Parts to show app-indicators for gtk2, gtk3, qt4 and qt5.
'ascii' codec can't encode character '\xae' in position 40: ordinal not in range(128)

(classic)liu-xiao-guo@localhost:~$ snapcraft --version
2.22.1

The same error appears.

I am not sure whether it is the could part problem or it is related to the snapcraft.

[XiaoGuo, Liu (liu-xiao-guo)]

After changing the remote part from

[mqtt-paho/python3]

to:

[mqtt-paho-python3]

now, it can build the project successfully. However, the error for "snapcraft search" still remains.