Getting following error while attempting to embed a document in html

Getting following error while attempting to embed a document in html
Hi,
Thanks for posting in the Lucid Community! Please note that we edited your post by removing your OAuth token to protect your privacy. Our team has seen this error occur when the access token for the embed expires.
Can you try refreshing your access token and let us know if you still receive the error? I’ve linked our documentation here.
A Lucid account is required to interact with the Community, and your participation is subject to the Supplemental Lucid Community Terms. You may not participate in the Community if you are under age 18. You will be redirected to the Lucid app to log in.
A Lucid account is required to interact with the Community, and your participation is subject to the Supplemental Lucid Community Terms. You may not participate in the Community if you are under age 18. You will be redirected to the Lucid app to log in.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.