Change Mount Point from Read-Only creates error

I have a mount point set against a plex jail (11.2-RELEASE-p9 ). Its currently set to read only. I want to change this to allow changes, but when I untick the read only option and click save, I get an error saying "[EFAULT] Destination: /mnt/vol1/iocage/jails/plex/root/media already exists!"

Here's the error log.
"
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/middlewared/plugins/jail.py", line 707, in fstab
dump, _pass, index=index
File "/usr/local/lib/python3.6/site-packages/iocage_lib/iocage.py", line 1037, in fstab
index=index
File "/usr/local/lib/python3.6/site-packages/iocage_lib/ioc_fstab.py", line 83, in _init_
self._fstab_parse_()
File "/usr/local/lib/python3.6/site-packages/iocage_lib/ioc_fstab.py", line 125, in _fstab_parse_
self._validate_fstab_([self.mount])
File "/usr/local/lib/python3.6/site-packages/iocage_lib/ioc_fstab.py", line 279, in _validate_fstab_
exception=iocage_lib.ioc_exceptions.ValidationFailed
File "/usr/local/lib/python3.6/site-packages/iocage_lib/ioc_common.py", line 90, in logit
_callback(content, exception)
File "/usr/local/lib/python3.6/site-packages/iocage_lib/ioc_common.py", line 64, in callback
raise callback_exception(message)
iocage_lib.ioc_exceptions.ValidationFailed: ['Destination: /mnt/vol1/iocage/jails/plex/root/media already exists!']

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/concurrent/futures/process.py", line 175, in _process_worker
r = call_item.fn(*call_item.args, **call_item.kwargs)
File "/usr/local/lib/python3.6/site-packages/middlewared/worker.py", line 131, in main_worker
res = loop.run_until_complete(coro)
File "/usr/local/lib/python3.6/asyncio/base_events.py", line 468, in run_until_complete
return future.result()
File "/usr/local/lib/python3.6/site-packages/middlewared/worker.py", line 91, in _run
return await self._call(name, serviceobj, methodobj, params=args, job=job)
File "/usr/local/lib/python3.6/site-packages/middlewared/worker.py", line 84, in _call
return methodobj(*params)
File "/usr/local/lib/python3.6/site-packages/middlewared/worker.py", line 84, in _call
return methodobj(*params)
File "/usr/local/lib/python3.6/site-packages/middlewared/schema.py", line 668, in nf
return f(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/middlewared/plugins/jail.py", line 719, in fstab
raise CallError(e.message)
middlewared.service_exception.CallError: [EFAULT] Destination: /mnt/vol1/iocage/jails/plex/root/media already exists!
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/middlewared/main.py", line 166, in call_method
result = await self.middleware.call_method(self, message)
File "/usr/local/lib/python3.6/site-packages/middlewared/main.py", line 1097, in call_method
return await self._call(message['method'], serviceobj, methodobj, params, app=app, io_thread=False)
File "/usr/local/lib/python3.6/site-packages/middlewared/main.py", line 1042, in _call
return await self._call_worker(name, *args)
File "/usr/local/lib/python3.6/site-packages/middlewared/main.py", line 1062, in _call_worker
return await self.run_in_proc(main_worker, name, args, job)
File "/usr/local/lib/python3.6/site-packages/middlewared/main.py", line 996, in run_in_proc
return await self.run_in_executor(self.__procpool, method, *args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/middlewared/main.py", line 972, in run_in_executor
return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs))
middlewared.service_exception.CallError: [EFAULT] Destination: /mnt/vol1/iocage/jails/plex/root/media already exists!