Can't Unlock Wazgot Battle Station

Im am trying to unlock the Wazgot battle station,

i have all the credits and items, but its giving an error message that i can’t understand the reason.

“Ability research error”

 

What is that?

 

 

image.png.119d876217679b4879ca12f85f967c8d.png

Is issue continue now?

Yes sir