Unknown error when calling photosV2.commit OK API. What's the matter?

Question

Classmates

I sequentially perform the following steps:
1) I log
in 2) I make photosV2.getUploadUrl
3) I make a post request and transfer the image via curl
4) But when photosV2.commit is called, an
error is generated:
[error_code] => 1
[error_msg] => UNKNOWN : Unexpected error, logged by ID : APIERR1476867818700_20
[error_data] =>
On all previous stages, everything returns normally, the problem is at the last stage. I specify the token and photo id correctly, the comment is just text.