Pool doesn't decrypt

TrueNAS General
1

After a power outage none of my pools decrypt upon typing in the passphrase. I get this error but am not tech savvy enough to derive help from it. Hope that someone here can point to the mistake im making.

Error: concurrent.futures.process._RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/concurrent/futures/process.py", line 239, in _process_worker
    r = call_item.fn(*call_item.args, **call_item.kwargs)
  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 97, in main_worker
    res = loop.run_until_complete(coro)
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 587, in run_until_complete
    return future.result()
  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 53, in _run
    return await self._call(name, serviceobj, methodobj, params=args, job=job)
  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 45, in _call
    return methodobj(*params)
  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 45, in _call
    return methodobj(*params)
  File "/usr/local/lib/python3.7/site-packages/middlewared/schema.py", line 965, in nf
    return f(*args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/middlewared/plugins/zfs.py", line 390, in import_pool
    'Failed to mount datasets after importing "%s" pool: %s', name_or_guid, str(e), exc_info=True
  File "libzfs.pyx", line 369, in libzfs.ZFS.__exit__
  File "/usr/local/lib/python3.7/site-packages/middlewared/plugins/zfs.py", line 380, in import_pool
    raise CallError(f'Pool {name_or_guid} not found.', errno.ENOENT)
middlewared.service_exception.CallError: [ENOENT] Pool 573962227414056319 not found.
"""

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

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/middlewared/plugins/pool.py", line 1667, in unlock
    'cachefile': ZPOOL_CACHE_FILE,
  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1141, in call
    app=app, pipes=pipes, job_on_progress_cb=job_on_progress_cb, io_thread=True,
  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1081, in _call
    return await self._call_worker(name, *args)
  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1101, in _call_worker
    return await self.run_in_proc(main_worker, name, args, job)
  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1036, in run_in_proc
    return await self.run_in_executor(self.__procpool, method, *args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1010, in run_in_executor
    return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs))
middlewared.service_exception.CallError: [ENOENT] Pool 573962227414056319 not found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/middlewared/job.py", line 349, in run
    await self.future
  File "/usr/local/lib/python3.7/site-packages/middlewared/job.py", line 385, in __run_body
    rv = await self.method(*([self] + args))
  File "/usr/local/lib/python3.7/site-packages/middlewared/schema.py", line 961, in nf
    return await f(*args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/middlewared/plugins/pool.py", line 1679, in unlock
    raise CallError(msg)
middlewared.service_exception.CallError: [EFAULT] Pool could not be imported: 2 devices failed to decrypt.
2

It helps if you give us your hardware, os and pool / vdev details to understand what is happening. Screenshots may help too.

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