I'm on ubuntu 14.4 and monero used to work, but now I'm getting the following error. I'm not sure how to fix this.
2017-12-21 17:04:20.897 7fe75c63a780 INFO global src/daemon/main.cpp:279 Monero 'Helium Hydra' (v0.11.1.0-release)
2017-12-21 17:04:20.898 7fe75c63a780 INFO global src/daemon/protocol.h:55 Initializing cryptonote protocol...
2017-12-21 17:04:20.898 7fe75c63a780 INFO global src/daemon/protocol.h:60 Cryptonote protocol initialized OK
2017-12-21 17:04:20.906 7fe75c63a780 INFO global src/daemon/p2p.h:63 Initializing p2p server...
2017-12-21 17:04:21.767 7fe75c63a780 INFO global src/daemon/core.h:89 Deinitializing core...
2017-12-21 17:04:21.771 7fe75c63a780 ERROR daemon src/daemon/core.h:94 Failed to deinitialize core...
2017-12-21 17:04:21.781 7fe75c63a780 INFO global src/daemon/protocol.h:77 Stopping cryptonote protocol...
2017-12-21 17:04:21.781 7fe75c63a780 INFO global src/daemon/protocol.h:81 Cryptonote protocol stopped successfully
2017-12-21 17:04:21.781 7fe75c63a780 ERROR daemon src/daemon/main.cpp:287 Exception in main! Failed to initialize p2p server.
monerod
running.