My machine is letting out only a little water at a time. How to reset?

How do I re-set the amount of water being dispensed by my Nespresso machine? It is letting out only a little bit at a time, even from the "big" side.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

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