Hello @Jingxiong Wang Thanks for reaching out to us, may I know what error message you got for this issue? It may be caused file size also if you got an internal error or invalid error.
For now, could you please add yourself as Cognitive Service Speech Contributor as the screenshot below?
Please let us know how it works.
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.