问Errno 13-权限被拒绝：'/User‘

EN

当我试图在django admin中为用户添加配置文件照片(127.0.0.1:8000/admin)时，我收到了这个错误消息。

有人能帮我找出原因吗？

OSError at /admin/角色/角色/6/ Errno 13权限被拒绝：'/User‘请求方法: POST请求URL：http://127.0.0.1:8000/admin/role/role/6/ Django版本: 1.8.2异常类型: OSError异常值： Errno 13权限被拒绝：'/User‘异常位置: makedirs中的/Users/wangjohnson/Envs/TUAN/lib/python2.7/os.py，第157行Python :/User/wangjohnson/Envs/TUAN/bin/ Python版本: 2.7.10 Python路径： ‘/User/wangjohnson/superpm’，'/Users/wangjohnson/Envs/TUAN/lib/python27.zip'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7/plat-darwin'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7/plat-mac'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7/plat-mac/lib-scriptpackages'，'/Users/wangjohnson/Envs/TUAN/Extras/lib/python'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7/lib-tk'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7/lib-old'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7/lib-dynload'，'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7'，'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin'，'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk'，'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac'，'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages'，'/Users/wangjohnson/Envs/TUAN/lib/python2.7/site-packages‘

model.py

class Role(models.Model):
SEX_CHOICES = {
    ('MALE','MALE'),
('FEMALE','FEMALE'),
}
name = models.CharField(max_length=20)
role = models.CharField(max_length=30)
sex = models.CharField(max_length=10,choices=SEX_CHOICES)
intro = models.TextField()
age = models.IntegerField()
product = models.ForeignKey(Product,related_name='roles')
photo = models.ImageField(upload_to='photos')

def unicode(self)：返回self.name

settings.py

MEDIA_ROOT = '/User/wangjohnson/superpm/media/'