Restore fails when no values in contact manager

Processing contactmanager
Resetting contactmanager module data
Updating tables contactmanager_groups, contactmanager_group_entries, contactmanager_entry_speeddials, contactmanager_entry_numbers, contactmanager_entry_images, contactmanager_entry_userman_images, contactmanager_entry_xmpps, contactmanager_entry_emails, contactmanager_entry_websites...Done
Generating CSS...Done
Restoring from contactmanager [FreePBX\modules\Contactmanager\Restore]
Importing KVStore from contactmanager
Invalid argument supplied for foreach() on line 25 of file /var/www/html/admin/modules/contactmanager/Restore.php
#0 /var/www/html/admin/modules/contactmanager/Restore.php(25): Whoops\Run->handleError(2, 'Invalid argumen...', '/var/www/html/a...', 25, Array)
#1 /var/www/html/admin/modules/backup/Handlers/Restore/Common.php(138): FreePBX\modules\Contactmanager\Restore->runRestore()
#2 /var/www/html/admin/modules/backup/Handlers/Restore/Common.php(126): FreePBX\modules\Backup\Handlers\Restore\Common->runRestore(Object(FreePBX\modules\Contactmanager\Restore))
#3 /var/www/html/admin/modules/backup/Handlers/Restore/Multiple.php(56): FreePBX\modules\Backup\Handlers\Restore\Common->processModule('contactmanager', '15.0.8.33')
#4 /var/www/html/admin/modules/backup/Console/Backup.class.php(324): FreePBX\modules\Backup\Handlers\Restore\Multiple->process(false)
#5 /var/www/html/admin/libraries/Composer/vendor/symfony/console/Command/Command.php(255): FreePBX\Console\Command\Backup->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#6 /var/www/html/admin/libraries/Composer/vendor/symfony/console/Application.php(960): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#7 /var/www/html/admin/libraries/Composer/vendor/symfony/console/Application.php(255): Symfony\Component\Console\Application->doRunCommand(Object(FreePBX\Console\Command\Backup), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#8 /var/www/html/admin/libraries/Composer/vendor/symfony/console/Application.php(148): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#9 /var/lib/asterisk/bin/fwconsole(163): Symfony\Component\Console\Application->run()
#10 {main}