Why can't I see this conversation and I'm getting an error message that I don't have access?

Why can't I see this conversation and I'm getting an error message that I don't have access?

1. Please check if the chat/conversation is assigned in your name.
2. Please check your user& role access, if it is "member" the user can only view chats which are assigned to them.
Note: If the user is mapped to a member access then the user can see only those chats which are assigned to them.