It looks like on the left side of your bike, the centre stand is held on by whats left of the stud.
My old 640 was like that when I got it.
It might be an idea to get the left side fixed up with a welded bolt like I used.
Get a bolt that has a bit of a shoulder so any threads that might be there do not dig into the frame or wear out.
HP2 Sport, R1200S, R100S, KTM 640 Adventure, KTM 520 EXC/Motard, Yamaha RZ350, Hodaka 125 Wombat