[EFAULT] LDAP cache already exists. Refusing to generate cache

AD OFF

Ldap ONLY, bind successfully.

Cache doesn't refresh when ldap setting modified or saved.

[2021/04/01 23:02:57] (ERROR) middlewared.job.run():379 - Job <bound method LDAPService.fill_cache of <middlewared.plugins.ldap.LDAPService object at 0x81ce25d00>> failed
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/middlewared/job.py", line 367, in run
    await self.future
  File "/usr/local/lib/python3.8/site-packages/middlewared/job.py", line 405, in __run_body
    rv = await self.middleware.run_in_thread(self.method, *([self] + args))
  File "/usr/local/lib/python3.8/site-packages/middlewared/utils/run_in_thread.py", line 10, in run_in_thread
    return await self.loop.run_in_executor(self.run_in_thread_executor, functools.partial(method, *args, **kwargs))
  File "/usr/local/lib/python3.8/site-packages/middlewared/utils/io_thread_pool_executor.py", line 25, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/ldap.py", line 980, in fill_cache
    raise CallError('LDAP cache already exists. Refusing to generate cache.')
middlewared.service_exception.CallError: [EFAULT] LDAP cache already exists. Refusing to generate cache.
LDAP cache already exists. Refusing to generate cache.[EFAULT] LDAP cache already exists. Refusing to generate cache

debug attached