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/Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/vsc-leetcode-cli/lib/log.js:55
 let s = args.map(x => x.toString()).join(' ');
 ^
TypeError: Cannot read property 'toString' of undefined
 at args.map.x (/Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/vsc-leetcode-cli/lib/log.js:55:31)
 at Array.map (<anonymous>)
 at Object.log.(anonymous function) [as info] (/Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/vsc-leetcode-cli/lib/log.js:55:20)
 at /Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/vsc-leetcode-cli/lib/commands/user.js:52:13
 at /Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/vsc-leetcode-cli/lib/plugins/cache.js:77:12
 at /Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/vsc-leetcode-cli/lib/plugins/leetcode.js:520:14
 at Request._callback (/Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/vsc-leetcode-cli/lib/plugins/leetcode.js:419:19)
 at Request.self.callback (/Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/request/request.js:185:22)
 at Request.emit (events.js:182:13)
 at Request.<anonymous> (/Users/zhuanghaixin/.vscode/extensions/shengchen.vscode-leetcode-0.15.4/node_modules/request/request.js:1161:10)