exception error

[hicter00]

(node:98841) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'augustApi' of undefined
at /usr/local/lib/node_modules/homebridge-august-smart-locks/platform.js:336:33
at processTicksAndRejections (internal/process/task_queues.js:97:5)
(node:98841) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:98841) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.