Warning : This enforcement code is disabled because your organization uses private channels that are

The "Publish to web" feature is available only in the My Workspace and in dedicated capacity workspaces. Ensure that your report is in one of these workspaces.
Your organization might be using certain private or premium features or content that aren't supported with "Publish to web". Consider creating a version of the report that doesn't use these features for the purpose of publishing to the web.
Check if "Publish to web" has been disabled at the organization level. If you're an admin, you can review this by navigating to the Admin Portal in Power BI Service. If you're not an admin, discuss the matter with someone who is, as they might have set restrictions due to organizational policies or data privacy concerns.