When you launch a maze live, we run one last validation check to make sure that the test doesn't have any unexpected issues that might impact your tester experience. If there is an issue, we will prevent the maze from going live. One such error reads
Missing page and this error occurs when one or more of your screens did not successfully sync to Maze from your prototype.
Refresh your prototype
Your first step should be refreshing your prototype as sometimes this error occurs when there's a one-time sync issue from the prototype you imported.
We would recommend reviewing your Mission blocks to ensure that your expected paths are still as you'd intended since any paths using the affected screens could potentially need to be rebuilt. Once you've verified it looks good, you should be able to launch the duplicate maze live and delete the original broken one.
Duplicate the affected maze
If refreshing the maze and fixing any broken paths doesn't address the issue, then the issue may be the result of unexpectedly invalid screen data. In that case, duplicating the affected maze, will generally fix any data inconsistencies. Once you've duplicated the affected maze, you should be able to launch the duplicate maze live and delete the original broken one.
If you continue to experience this issue even with the duplicated maze, please contact Support and we'd be glad to troubleshoot further.