更新

app/Http/Controllers/Api/UserController.php

@@ -107,8 +107,7 @@ class UserController extends Controller
                 ]);
             }
 
-            UserInfoModel::firstOrCreate([
-                'user_id' => $user->id,
+            UserInfoModel::query()->where('user_id',$user->id)->update([
                 'avatar' =>$request->avatar,
                 'nickname' =>$request->nickname,
                 'birthday' =>$request->birthday,