laravel tymon/jwt-auth 报错

Problem 1
- Installation request for tymon/jwt-auth ^0.5.12 -> satisfiable by tymon/jwt-auth[0.5.12].

解决方法：

{
"require": {
"nesbot/carbon": "2.16.3 as 1.34.0"
"kylekatarnls/laravel-carbon-2": "^1.0.0"
}