Backup error, SNG7

1

FreePBX 12.7.3-1708-1.sng7 backing up to a Server 2012 R2 FTP host.

Error:

Initializing Backup 2
Backup Lock acquired!
Running pre-backup hooks…
Adding items…
Building manifest…
Creating backup…
Storing backup…
Whoops\Exception\ErrorException: ftp_rawlist(): php_connect_nonb() failed: Operation now in progress (115) in file /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/FTPWrapper.php on line 295
Stack trace:

  1. Whoops\Exception\ErrorException->() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/FTPWrapper.php:295
  2. ftp_rawlist() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/FTPWrapper.php:295
  3. Touki\FTP\FTPWrapper->rawlist() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/Manager/FTPFilesystemManager.php:155
  4. Touki\FTP\Manager\FTPFilesystemManager->findOneBy() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/Manager/FTPFilesystemManager.php:262
  5. Touki\FTP\Manager\FTPFilesystemManager->findDirectoryByName() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/Manager/FTPFilesystemManager.php:273
  6. Touki\FTP\Manager\FTPFilesystemManager->findDirectoryByDirectory() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/FTP.php:148
  7. Touki\FTP\FTP->directoryExists() /var/www/html/admin/modules/backup/functions.inc/class.backup.php:475
  8. FreePBX\modules\Backup\Backup->store_backup() /var/www/html/admin/modules/backup/bin/backup.php:143