Server crash due to ticker error

[jlopp]

We had a crash of OpenBazaar Server v0.14.3; the final message printed to the console was:

Get https://ticker.openbazaar.org/api: dial tcp: lookup ticker.openbazaar.org on 192.168.1.1:53: server misbehaving

The tail end of ob.log:

2020-07-18 09:58:45.536 [DEBUG] [recordAgingNotifier/PerformTask] notifications created/records updated: purchaseExpire: 0/0, dispute: 0/0, sales: 0/0, purchaseTimeout: 0/0
2020-07-18 10:04:15.125 [INFO] [WalletService/processIncomingBlock] received new Litecoin block at height 1879031: d3a436085747ea15a7d3656074a3ef50b58e4a2a077f4c8a646e44053bd47267
2020-07-18 10:04:52.655 [INFO] [WalletService/processIncomingBlock] received new Litecoin block at height 1879032: baf317e2a80c21f7723be4f4d320c9d961f85e645d416473f1058d17c37341d1
2020-07-18 10:08:45.567 [DEBUG] [recordAgingNotifier/PerformTask] notifications created/records updated: purchaseExpire: 0/0, dispute: 0/0, sales: 0/0, purchaseTimeout: 0/0
2020-07-18 10:08:54.202 [INFO] [WalletService/processIncomingBlock] received new Litecoin block at height 1879033: 75c3594ec9c887ebf069233e27cab4a3aba3a3dc175a6b7dcae47aaf380c3fb7
2020-07-18 10:12:13.618 [INFO] [WalletService/processIncomingBlock] received new Litecoin block at height 1879034: 757bd39d7b486c283804e84accef170b7dad195a64971d1f13a6bdf708f39b5b
2020-07-18 10:18:45.536 [DEBUG] [recordAgingNotifier/PerformTask] notifications created/records updated: sales: 0/0, purchaseTimeout: 0/0, purchaseExpire: 0/0, dispute: 0/0
2020-07-18 10:18:49.890 [INFO] [WalletService/processIncomingBlock] received new Litecoin block at height 1879035: e2e6947e39b8eaeed4136279f20348e3c65661478d35e032dec61b98c88d266d
2020-07-18 10:19:05.588 [INFO] [WalletService/processIncomingBlock] received new Litecoin block at height 1879036: 5450f3287d49a05ed324d4c3ef7b9263dd7ca4bea4ec27640e0b46b73ef007de
2020-07-18 10:21:10.347 [CRITICAL] [client/setupListeners] error after retrying: websocket reconnection timeout (zec.blockbook.api.openbazaar.org)