crash on notification about unknown transaction

[michielbdejong]

Got this error while running two clients to the same account in two separate windows:

ilp-plugin-xrp-escrow got a notification of a transaction +3s
/Users/michiel/gh/michielbdejong/ilp-node/node_modules/ilp-plugin-xrp-escrow/src/translate.js:57
  const memos = parseMemos(cached.Memos)
                                 ^

TypeError: Cannot read property 'Memos' of undefined
    at escrowToTransfer (/Users/michiel/gh/michielbdejong/ilp-node/node_modules/ilp-plugin-xrp-escrow/src/translate.js:57:34)
    at Object.escrowCancelToTransfer (/Users/michiel/gh/michielbdejong/ilp-node/node_modules/ilp-plugin-xrp-escrow/src/translate.js:88:10)
    at PluginXrpEscrow._handleTransaction (/Users/michiel/gh/michielbdejong/ilp-node/node_modules/ilp-plugin-xrp-escrow/src/plugin.js:347:34)
    at RestrictedConnection._api.connection.on (/Users/michiel/gh/michielbdejong/ilp-node/node_modules/ilp-plugin-xrp-escrow/src/plugin.js:80:12)
    at emitOne (events.js:101:20)
    at RestrictedConnection.emit (events.js:191:7)
    at RestrictedConnection._onMessage (/Users/michiel/gh/michielbdejong/ilp-node/node_modules/ripple-lib/dist/npm/common/connection.js:129:17)
    at emitTwo (events.js:106:13)
    at WebSocket.emit (events.js:194:7)
    at Receiver.ontext (/Users/michiel/gh/michielbdejong/ilp-node/node_modules/ws/lib/WebSocket.js:841:10)