wallet.external not set: TypeError: Class constructor Exchange cannot be invoked without 'new' at new SFOX (/usr/lib/node_modules/blockchain-wallet-service/node_modules/bitcoin-sfox-client/lib/sfox.js:56:98) at new External (/usr/lib/node_modules/blockchain-wallet-service/node_modules/blockchain-wallet-client/lib/external.js:27:20) at fetchSuccess (/usr/lib/node_modules/blockchain-wallet-service/node_modules/blockchain-wallet-client/lib/external.js:111:12) at <anonymous> at process._tickCallback (internal/process/next_tick.js:189:7)
Service v0.26.1, Node v8.12.0
wallet.external not set: TypeError: Class constructor Exchange cannot be invoked without 'new' at new SFOX (/usr/lib/node_modules/blockchain-wallet-service/node_modules/bitcoin-sfox-client/lib/sfox.js:56:98) at new External (/usr/lib/node_modules/blockchain-wallet-service/node_modules/blockchain-wallet-client/lib/external.js:27:20) at fetchSuccess (/usr/lib/node_modules/blockchain-wallet-service/node_modules/blockchain-wallet-client/lib/external.js:111:12) at <anonymous> at process._tickCallback (internal/process/next_tick.js:189:7)