Pressure issues and small bits flying

Hello,

I recently took apart my sodastream so I could clean it, I have put it all back together and it does work. However, there are two small plugs within the pressure system which keep flying out at speed whenever I try to put pressure into a sodastream bottle.

Does anyone know how to fix this? Thank you!

crwdns2915344:0crwdne2915344:0
crwdns2915344:0crwdne2915344:0
crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0