Backup over FTP

I format the machine, i create a new configuration,
I used the Backup Wizard to create a new back up (locally and FTP)
i get this error:

Initializing Backup 3
Backup Lock acquired!
Running pre-backup hooks...
Adding items...
Building manifest...
Creating backup...
Storing backup...
Exception: DateTime::__construct(): Failed to parse time string (-3.2- 00:00) at position 3 (2): Unexpected character in file /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/FilesystemFactory.php on line 64
Stack trace:
1. Exception->() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/FilesystemFactory.php:64
2. DateTime->__construct() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/FilesystemFactory.php:64
3. Touki\FTP\FilesystemFactory->build() /var/www/html/admin/modules/backup/vendor/touki/ftp/lib/Touki/FTP/Manager/FTPFilesystemManager.php:162
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:423
8. FreePBX\modules\Backup\Backup->store_backup() /var/www/html/admin/modules/backup/bin/backup.php:145