The provided authorization grant 按教程操作，怎么解决?
{"message": "The provided authorization grant (e.g., authorization code, resource owner credentials) or refresh token is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client."}
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你的数据库里有这个账号吗？
用户名不对
如果数据库中有该用户，那么试试验证密码 public function validateForPassportPasswordGrant($password) { if($password == $this->password){ return true; } return false; }