Unable to delete certificates

When trying to delete old lets encrypt certificate you are presented with the following error. The same applies when trying to delete freenas_default

Error: Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/middlewared/job.py", line 361, in run
await self.future
File "/usr/local/lib/python3.8/site-packages/middlewared/job.py", line 399, 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/schema.py", line 977, in nf
return f(*args, **kwargs)
File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/crypto.py", line 2028, in do_delete
self.middleware.call_sync('certificate.check_dependencies', id)
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1245, in call_sync
return self.run_coroutine(methodobj(*prepared_call.args))
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1285, in run_coroutine
return fut.result()
File "/usr/local/lib/python3.8/concurrent/futures/_base.py", line 432, in result
return self.__get_result()
File "/usr/local/lib/python3.8/concurrent/futures/_base.py", line 388, in __get_result
raise self._exception
File "/usr/local/lib/python3.8/site-packages/middlewared/service.py", line 555, in check_dependencies
raise CallError('This object is being used by other objects', errno.EBUSY,
middlewared.service_exception.CallError: [EBUSY] This object is being used by other objects