my tezos node is stucked on this error:

Current head: BLpEPZhSw81k (timestamp: 2022-01-24T03:12:08.000-00:00, validation: 2022-01-24T11:41:02.077-00:00)
Jan 24 12:41:03.343 - protocol_cache: start loading cache now
Jan 24 12:41:04.792 - protocol_cache: stop loading cache now
  Kind.of_magic: unexpected magic char '\000'

It was running properly until this error appears in logs. I've try to restart it and to delete data to start from scratch, but the problem still happens on this head.

Do you know what I can do to fix it ?

1 Answer 1


There are similar issues reported for this error. The main investigation relies here https://gitlab.com/tezos/tezos/-/issues/1982

Can you have a look to it? The main conclusion is that there is something strange with EBS snapshot of an EC2 volume. Are you using this kind of architecture?

  • Thanks for the link. But I'm not using this kind of architecture. I'm using a personal computer with Ubuntu 20.04 LTS.
    – avl
    Commented Jan 24, 2022 at 15:03
  • Oh! So this is unexpected. Can you open an issue with as much details as possible on gitlab.com/tezos/tezos/-/issues ?
    – vect0r
    Commented Jan 25, 2022 at 17:15
  • Ok. I don't have much details to give, but we will see.
    – avl
    Commented Jan 26, 2022 at 7:29
  • And I've started from scratch another node on hangzhounet. And now I'm stuck on this error: Error: (Invalid_argument "String.blit / Bytes.blit_string") tezos-node: Error: (Invalid_argument "String.blit / Bytes.blit_string")
    – avl
    Commented Jan 26, 2022 at 7:36
  • Indeed, this is very strange. Please open an issue to allow a better tracking of the problem, and add as much details as possible (machine, hardware, os, …).
    – vect0r
    Commented Jan 27, 2022 at 8:04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.