WordPressスクールでは、BackWPupワードプレス・プラグインを使って、別のワードプレスサイトのバックアップを最近始めました。（バックアップはDropboxに保存しています）
今朝は
[ERROR] BackWPup log 25-5月-2016 05:01: Job with ID 1というメールがきていました。早朝のバックアップが失敗したようです。
[INFO] BackWPup 3.3.1; A project of Inpsyde GmbH
[INFO] Log Level: Normal (translated)
[INFO] BackWPup job: Job with ID 1
[INFO] Logfile is: backwpup_log_ff1f2b_2016-05-25_05-01-17.html
[INFO] Backup file is: backwpup_ff1f2b_2016-05-25_05-01-17.zip
[25-May-2016 05:01:17] 1. Try to backup database …
[25-May-2016 05:01:18] Connected to database sddb0040063516 on sddb0040063516.cgidb
[25-May-2016 05:01:27] Added database dump “sddb0040063516.sql” with 39.68 MB to backup file list
[25-May-2016 05:01:27] Database backup done!
[25-May-2016 05:01:29] 1. Trying to make a list of folders to back up …
[25-May-2016 05:01:33] Added “wp-config.php” to backup file list
[25-May-2016 05:01:33] 576 folders to backup.
[25-May-2016 05:01:35] 1. Trying to generate a file with installed plugin names …
[25-May-2016 05:01:35] Added plugin list file “d68bc64ebe470848daa70db8847e245f.pluginlist.2016-05-25.txt” with 4.32 kB to backup file list.
[25-May-2016 05:01:35] 1. Trying to generate a manifest file …
[25-May-2016 05:01:35] Added manifest.json file with 10.70 kB to backup file list.
[25-May-2016 05:01:35] 1. Trying to create backup archive …
[25-May-2016 05:01:35] Compressing files as ZipArchive. Please be patient, this may take a moment.
[25-May-2016 05:29:33] Backup archive created.
[25-May-2016 05:29:33] Archive size is 1.04 GB.
[25-May-2016 05:29:33] 12552 Files with 1.11 GB in Archive.
[25-May-2016 05:29:35] 1. Try to send backup file to Dropbox …
[25-May-2016 05:29:36] Authenticated with Dropbox of user: Yuji Kamata
[25-May-2016 05:29:36] Uploading to Dropbox …
[25-May-2016 05:58:35] ERROR: Dropbox API: (500) The server has either erred or is incapable of performing the requested operation.
[25-May-2016 05:58:37] 2. Try to send backup file to Dropbox …
[25-May-2016 05:58:37] Authenticated with Dropbox of user: Yuji Kamata
[25-May-2016 05:58:37] Uploading to Dropbox …
[25-May-2016 06:08:51] Backup transferred to
[25-May-2016 06:08:52] ERROR: Job has ended with errors in 4055 seconds. You must resolve the errors for correct execution.