Dropbox ERROR: Step aborted: too many attempts!

Hi there, I’m getting an error with my Dropbox uploads with BackWPup. Here’s the log. Thanks for the help! ??

[INFO] BackWPup 3.10.0; A project of Inpsyde GmbH
[INFO] WordPress 5.4.10 on https://lifebyjohn.com/
[INFO] Log Level: Normal
[INFO] BackWPup job: Dropbox
[INFO] Logfile is: backwpup_log_eec5fd_2022-03-28_12-46-54.html
[INFO] Backup file is: backwpup_YIZNPRBX01_2022-03-28_12-46-54.tar.gz
[28-Mar-2022 12:46:54] 1. Try to backup database …
[28-Mar-2022 12:46:54] Connected to database sheilapa_wrd3 on localhost
[28-Mar-2022 12:46:58] Added database dump "sheilapa_wrd3.sql" with 29.87 MB to backup file list
[28-Mar-2022 12:46:58] Database backup done!
[28-Mar-2022 12:46:59] 1. Trying to make a list of folders to back up …
[28-Mar-2022 12:47:04] Added "wp-config.php" to backup file list
[28-Mar-2022 12:47:04] 2429 folders to backup.
[28-Mar-2022 12:47:05] 1. Trying to create a WordPress export to XML file …
[28-Mar-2022 12:47:07] Check WP Export file …
[28-Mar-2022 12:47:07] WP Export file is a valid WXR file.
[28-Mar-2022 12:47:07] Added XML export "Life_by_John.wordpress.2022-03-28.xml" with 2.38 MB to backup file list.
[28-Mar-2022 12:47:07] 1. Trying to generate a file with installed plugin names …
[28-Mar-2022 12:47:07] Added plugin list file "Life-by-John.pluginlist.2022-03-28.txt" with 4.18 KB to backup file list.
[28-Mar-2022 12:47:07] 1. Trying to generate a manifest file …
[28-Mar-2022 12:47:07] Added manifest.json file with 3.28 KB to backup file list.
[28-Mar-2022 12:47:07] 1. Trying to create backup archive …
[28-Mar-2022 12:47:07] Compressing files as TarGz. Please be patient, this may take a moment.
[28-Mar-2022 13:12:29] Backup archive created.
[28-Mar-2022 13:12:29] Archive size is 956.85 MB.
[28-Mar-2022 13:12:29] 24026 Files with 3.07 GB in Archive.
[28-Mar-2022 13:12:30] 1. Try to send backup file to Dropbox …
[28-Mar-2022 13:12:31] Authenticated with Dropbox of user: John Patterson
[28-Mar-2022 13:12:31] Uploading to Dropbox …
[28-Mar-2022 13:12:31] Beginning new file upload session
[28-Mar-2022 13:14:20] /home3/sheilapa/public_html/lifebyjohn/wp-content/plugins/backwpup/inc/class-destination-dropbox-api.php: Dropbox API: (500) An unexpected server error was encountered. Response from server:
[28-Mar-2022 13:14:21] 2. Try to send backup file to Dropbox …
[28-Mar-2022 13:14:22] Authenticated with Dropbox of user: John Patterson
[28-Mar-2022 13:14:22] Uploading to Dropbox …
[28-Mar-2022 13:14:40] /home3/sheilapa/public_html/lifebyjohn/wp-content/plugins/backwpup/inc/class-destination-dropbox-api.php: Dropbox API: (500) An unexpected server error was encountered. Response from server:
[28-Mar-2022 13:14:40] 3. Try to send backup file to Dropbox …
[28-Mar-2022 13:14:40] Authenticated with Dropbox of user: John Patterson
[28-Mar-2022 13:14:40] Uploading to Dropbox …
[28-Mar-2022 13:15:49] /home3/sheilapa/public_html/lifebyjohn/wp-content/plugins/backwpup/inc/class-destination-dropbox-api.php: Dropbox API: (500) An unexpected server error was encountered. Response from server:
[28-Mar-2022 13:15:50] ERROR: Step aborted: too many attempts!
[28-Mar-2022 13:15:50] 1. Trying to check database …
[28-Mar-2022 13:15:51] Database check done!
[28-Mar-2022 13:15:51] One old log deleted
[28-Mar-2022 13:15:51] ERROR: Job has ended with errors in 1737 seconds. You must resolve the errors for correct execution.