This time is Military Training

I've just found out that I can't perform any military training. It is exactly the same problem I have in the battlefield. I hadn't tried it for a long time because I'm often just a clicker, and lazy/impatient enough not to wait for any reloading that a module needs. Might they be related problems?

In the beta server I get this message:

Fatal error
: Uncaught Error: Undefined constant "reward_qty" in /var/www/common/functions.php:308 Stack trace: #0 /var/www/common/functions.php(425): unlock_achievement('combatxp', '5664') #1 /var/www/html/military/index.php(243): add_achievement('combatxp', 1) #2 {main} thrown in
/var/www/common/functions.php
on line
308