error warning

hi..
i keep getting this error message .. how do i get it cleared up?

[INFO] BackWPup 3.3.7; A project of Inpsyde GmbH
[INFO] WordPress 4.7.4 on http://dogwooddogtraining.com/
[INFO] Log Level: Normal
[INFO] BackWPup job: Daily Backup
[INFO] Logfile is: backwpup_log_7b937c_2017-05-02_04-13-30.html
[INFO] Backup file is: backwpup_dw_2a4109_2017-05-02_04-13-30.tar.gz
[02-May-2017 04:13:30] 1. Try to backup database …
[02-May-2017 04:13:31] Connected to database dogwooddogtraining_com on mysql.dogwooddogtraining.com
[02-May-2017 04:13:54] Added database dump “dogwooddogtraining_com.sql” with 114.23 MB to backup file list
[02-May-2017 04:13:54] Database backup done!
[02-May-2017 04:13:54] 1. Trying to make a list of folders to back up …
[02-May-2017 04:14:10] Added “wp-config.php” to backup file list
[02-May-2017 04:14:10] 1118 folders to backup.
[02-May-2017 04:14:10] 1. Trying to create a WordPress export to XML file …
[02-May-2017 04:14:18] Check WP Export file …
[02-May-2017 04:14:18] WP Export file is a valid WXR file.
[02-May-2017 04:14:18] Added XML export “Dogwood_Dog_Training.wordpress.2017-05-02.xml” with 10.09 MB to backup file list.
[02-May-2017 04:14:18] 1. Trying to generate a file with installed plugin names …
[02-May-2017 04:14:18] Added plugin list file “Dogwood-Dog-Training.pluginlist.2017-05-02.txt” with 3.55 KB to backup file list.
[02-May-2017 04:14:18] 1. Trying to generate a manifest file …
[02-May-2017 04:14:18] Added manifest.json file with 7.12 KB to backup file list.
[02-May-2017 04:14:18] 1. Trying to create backup archive …
[02-May-2017 04:14:18] Compressing files as TarGz. Please be patient, this may take a moment.
[02-May-2017 04:15:30] WARNING: Signal “SIGTERM” (Termination signal) is sent to script!
[02-May-2017 04:15:32] 2. Trying to create backup archive …
[02-May-2017 04:15:55] Backup archive created.
[02-May-2017 04:15:55] Archive size is 393.61 MB.
[02-May-2017 04:15:55] 8141 Files with 569.88 MB in Archive.
[02-May-2017 04:15:55] 1. Try to send backup file to Dropbox …
[02-May-2017 04:15:56] Authenticated with Dropbox of user: debby quigley
[02-May-2017 04:15:56] Uploading to Dropbox …
[02-May-2017 04:36:22] WARNING: Job restarts due to inactivity for more than 5 minutes.
[02-May-2017 04:36:22] 2. Try to send backup file to Dropbox …
[02-May-2017 04:36:22] Authenticated with Dropbox of user: debby quigley
[02-May-2017 04:36:22] Uploading to Dropbox …
[02-May-2017 04:38:21] WARNING: Signal “SIGTERM” (Termination signal) is sent to script!
[02-May-2017 04:39:01] Backup transferred to https://content.dropboxapi.com/1/files/sandbox/Dogwood-Dog-Training/backwpup_dw_2a4109_2017-05-02_04-13-30.tar.gz
[02-May-2017 04:39:03] One file deleted from Dropbox
[02-May-2017 04:39:04] One old log deleted
[02-May-2017 04:39:04] WARNING: Job finished with warnings in 1534 seconds. Please resolve them for correct execution.