Rclone failed with exit code -9


I’m trying to copy files to a backblaze b2 bucket.
The dry run works normally.
When I run the task, after a while it fails with : rclone failed with exit code -9
More info shows

Error: Traceback (most recent call last):
File “/usr/local/lib/python3.9/site-packages/middlewared/job.py”, line 355, in run
await self.future
File “/usr/local/lib/python3.9/site-packages/middlewared/job.py”, line 391, in __run_body
rv = await self.method(*([self] + args))
File “/usr/local/lib/python3.9/site-packages/middlewared/schema.py”, line 981, in nf
return await f(*args, **kwargs)
File “/usr/local/lib/python3.9/site-packages/middlewared/plugins/cloud_sync.py”, line 1098, in sync
await self._sync(cloud_sync, options, job)
File “/usr/local/lib/python3.9/site-packages/middlewared/plugins/cloud_sync.py”, line 1145, in _sync
await rclone(self.middleware, job, cloud_sync, options[“dry_run”])
File “/usr/local/lib/python3.9/site-packages/middlewared/plugins/cloud_sync.py”, line 242, in rclone
raise CallError(message)
middlewared.service_exception.CallError: [EFAULT] * 2010/2010-03-19/P1010719.flv: 75% /1.488Mi, 246.737Ki/s, 1s
2010/2010-03-19/P1010720.MOV: 0% /695.460Mi, 0/s, -
2010/2010-04-11/P1010721.JPG: 26% /4.410Mi, 371.937Ki/s, 8s
2010/2010-04-11/P1010722.JPG: 14% /4.418Mi, 301.779Ki/s, 12s

rclone failed with exit code -9

I don’t understand what’s happening.