Odoo 14 sequence not working when create model (TypeError: not enough arguments for format string)

I have tried to follow tutorial odoo14, and it explain about sequence, I have followed the tutorial but sequence not working with error : TypeError: not enough arguments for format string.

After checking i realize that the mistake was in the prefix format in xml file.

it should be something like this : TC/%(year)s/%(month)s/ but i made it like this : TC/%(year)s/%(month)s%/

So i fix the xml file and restart the odoo server, but it still got the same problem, even i tried to search it from google, i still cannot find the error :(, until i check into the databases it self through setting-technical-sequence I can see that there were two same sequence but the first was the error one, so after i deleted it, everything run smoothly :).

Cannot change built in display resolution (Ubuntu 16.04)

 I have been frustated since I was not able to setup built in resolution in my Ubuntu 16.04,

it was stuck to 800x600 pixel.

I have tried to change the resolution by following this tutorial, but it did not work.

https://askubuntu.com/questions/1075157/unable-to-set-my-screen-resolution-higher

and finally  I found the solution by following below tutorial :

https://askubuntu.com/questions/441040/failed-to-get-size-of-gamma-for-output-default-when-trying-to-add-new-screen-res

 in short the solution is to change the following line in the grub file :

#GRUB_GFXMODE=640x480

I change it to 1920 x 1080 for the resolution and remove the # :

GRUB_GFXMODE=1920x1080

And after that update the grub and reboot the server.

sudo update-grub

sudo reboot

Locale issue (ValueError: unknown locale: UTF-8) with odoo 9

When running odoo using service command in Ubuntu 16.04 it run smoothly, but when run it using odoo.py i have error Locale issue (ValueError: unknown locale: UTF-8). 

It solved by adding below script to etc/default/locale :

export LC_ALL=en_US.UTF-8

export LANG="en_US.UTF-8"