Server exception not caught is lock file is not writable

Mon, 27 Jan 2020 22:26:29 GMT solid:get GET -- Error: undefined EACCES: permission denied, mkdir '/Library/WebServer/Documents/profile/card$.ttl.lock'
(node:1964) UnhandledPromiseRejectionWarning: TypeError: releaseLock is not a function
    at Promise (/devel/github.com/solid/node-solid-server/lib/lock.js:25:13)
    at <anonymous>
(node:1964) 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(). (rejection id: 105274)
Mon, 27 Jan 2020 22:26:30 GMT solid:get GET -- Error: undefined EACCES: permission denied, mkdir '/Library/WebServer/Documents/timbl/Public/Archive/linkeddata/chat/2019/08/23/chat.ttl.lock'
(node:1964) UnhandledPromiseRejectionWarning: TypeError: releaseLock is not a function
    at Promise (/devel/github.com/solid/node-solid-server/lib/lock.js:25:13)
    at <anonymous>
(node:1964) 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(). (rejection id: 105275)

Bắt đầu tại lib/lock.js, khoảng dòng 25, và tái hiện lỗi EACCES khi không thể tạo tệp lock. Theo dõi cách thao tác bị từ chối đi tới trình xử lý GET và xác minh rằng máy chủ không còn phát ra unhandled promise rejection cho trường hợp này.