I had an encrypted RAID-Z2 pool with 6x2TB discs from which I replaced the discs over time by 4TB drives. I thought that the pool would grow automatically but that did not happen so I tried out to click 'Expand Pool'.
After some time the following error appeared:

Error: Traceback (most recent call last):
File "/usr/local/lib/python3.9/site-packages/middlewared/job.py", line 367, in run
await self.future
File "/usr/local/lib/python3.9/site-packages/middlewared/job.py", line 403, in __run_body
rv = await self.method(*([self] + args))
File "/usr/local/lib/python3.9/site-packages/middlewared/schema.py", line 973, in nf
return await f(*args, **kwargs)
File "/usr/local/lib/python3.9/site-packages/middlewared/plugins/pool_/expand.py", line 101, in expand
await self.__geli_resize(pool, geli_resize, options)
File "/usr/local/lib/python3.9/site-packages/middlewared/plugins/pool_/expand.py", line 186, in __geli_resize
raise CallError(
middlewared.service_exception.CallError: [EFAULT] Resizing partitions of your encrypted pool failed and rolling back changes failed too. You'll need to run the following commands manually:
gpart resize -a 4k -i 2 -s 3998639460352 da1
gpart resize -a 4k -i 2 -s 3998639460352 da4
gpart resize -a 4k -i 2 -s 3998639460352 da5
gpart resize -a 4k -i 2 -s 3998639460352 da3
gpart resize -a 4k -i 2 -s 3998639460352 da6
gpart resize -a 4k -i 2 -s 3998639460352 da2
gpart resize -a 4k -i 1 -s 500107776000 nvd1
gpart resize -a 4k -i 1 -s 1000204800000 nvd0

I tried to issue one of the gpart commands on a data disc (nvd1/0 are nvme ssds for read and write cache, they are fine) and got this error:

errors: No known data errors
root@gaia:~ # gpart resize -a 4k -i 2 -s 3998639460352 da1
gpart: size '3998639460352': Invalid argument

For what its worth, I executed:

root@gaia:~ # gpart show da1
=> 40 7814037088 da1 GPT (3.6T)
40 88 - free - (44K)
128 4194304 1 freebsd-swap (2.0G)
4194432 7809842696 2 freebsd-zfs (3.6T)

What can I do? Thanks for your help in advance!