This error can occur during a restoration or migration process. When the error occurs, our plugin can not unzip your backup. Because the backup is either incomplete or corrupted. This may happened during the process of downloading/transferring the backup file.
If the backup is stored in localhost/remote storage, please remove it from the backups list then download and upload it again.
A general solution to this error would be:
- Remove the backup file from backup list of the destination site(where you migrate to).
- Using a ftp client or file manager to upload the backup file to the wp-content/wpvividbackups directory of the destination site, then click the Scan uploaded backups button on WPvivid to display it on the backup list to restore.