Problem description
The Expires request parameter is missing or is left empty.
Causes
You initiated a LiveChannel request that included the signature, but the Expires request parameter is missing, or the Expires request parameter is left empty.
Examples
You initiated a LiveChannel request that included the signature, but the Expires request parameter is missing or is left empty.
Solutions
The Expires request parameter specifies the validity period of the signature. The Expires request parameter must be in the Unix timestamp format.
For more information, see RTMP ingest URLs and signatures and Add signatures to URLs.