Create new version of bot flow through api request

[Mariia_Doroshenko]

Hi everyone,

I faced the problem during creating a new version of bot flow through the api request (post /api/v2/flows/{flowId}/versions).

I receive this error:
The request failed with response code: 500. Message: Flow 'Test API Intents' version 'saved_version_638ea2a6-d9fd-4f89-87f8-25333213r456' data content is in an invalid format.

And this response:
{
"message": "Flow 'Test' version 'saved_version_638ea2a6-d9fd-4f89-87f8-25333213r456' data content is in an invalid format.",
"code": "architect.flow.data.invalid.format",
"status": 500,
"messageWithParams": "Flow '{name}' version '{version}' data content is in an invalid format.",
"messageParams": {
"name": "Test",
"version": "saved_version_638ea2a6-d9fd-4f89-87f8-25333213r456"
},
"contextId": "66af8a53-e674-47cb-a92d-0c49c04472ad",
"details": [],
"errors": []
}

Can someone help with this issue? I do not really understand from where comes this saved_version.
I will be very grateful for any help.

Best regards
Mariia