使用FOSUB我创建了3个实体，第一个是从FOSBaseuser扩展的用户，然后我有Guardian（不能使用parent）和Etablissement，这两个扩展自用户，知道父和etablissement也是当我注册并选择角色时，它只填充用户表，我想摆脱用户表并填写其他两个表，我该怎么办呢。我想尝试@MappedSuperclass，但我不知道如何让它与两个实体一起工作，当我注册时我得到这个错误：
（HTTP 500内部服务器错误 执行'SELECT t0.username AS username_1，t0.username_canonical AS username_canonical_2，t0.email AS时发生异常 email_3，t0.email_canonical AS email_canonical_4，t0.enabled AS enabled_5，t0.salt AS salt_6，t0.password AS password_7，t0.last_login AS last_login_8，t0.confirmation_token AS confirmation_token_9， t0.password_requested_at AS password_requested_at_10，t0.roles AS roles_11 FROM user t0 WHERE t0.username_canonical =？'与params [ “AA”]：
SQLSTATE[42S02]: Base table or view not found: 1146 Table 'allforkids.user' doesn't exist)
任何线索如何解决它