用户1的用户名和邮箱为邮箱A，用户2尝试绑定邮箱A时接口报错。
https://scinav-dev.authing.cn/graphql/v2
{
“errors”: [
{
“message”: {
“code”: 500,
“message”: "duplicate key value violates unique constraint “IDX_a71b720a2a671a8a87aaa85240"”
},
“locations”: [
{
“line”: 3,
“column”: 3
}
],
“path”: [
“bindEmail”
],
“extensions”: {}
}
],
“data”: null
}