My closed captioning stopped

Our closed captioning has suddenly stopped working on all applications. When we press the CC button on the remote control, "not available" appears in red. Thor captioning has always worked until now.

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

crwdns2934109:0crwdne2934109:0

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