Importing a backup file to an existing course fails when duplicate block contexts are missing

Add the multi-block plugin to your site: https://moodle.org/plugins/block_multiblock Add the block to a course Turn editing on Press add new block Choose to add a new multiblock block to the course While viewing the course with the new multiblock, click the "cog" above the multiblock and select "manage multiblock contents" in the "select block" droplist choose to add "online users" block to the multiblock and press the "add" button Create a backup file. On the course homepage, go to the more -> course reuse link in the course header select the "Backup" option in the drop list at the top Press the "jump to final step" button at the bottom of the page and press continue when complete. Restore the backup On the course homepage, go to the more -> course reuse link in the course header, Select the "restore" option in the drop list at the top. your recently created course backup should show at the bottom of the page, click the "restore" link beside this backup you just created. Press Continue on the confirmation page On the Destination page, choose the "restore into this course" option and leave the "merge the backup course into this course" option selected and hit continue. Continue accepting default values on each restore page after this and ensure that the restore process completes and does not show an error message.