Backup never gets past “Compressing files as ZipArchive”

I have tried to create a backup multiple times for my website, but it always gets stuck at Compressing files as ZipArchive.

It works just fine for my other website with the same theme and plugins installed, but this website has a lot more content than the other one that works. I’ve tried excluding most plugins, all my staging sites, but it still won’t complete.

Help!

Here’s the log:
[INFO] BackWPup 3.6.10; A project of Inpsyde GmbH
[INFO] WordPress 5.2.3 on http://bhamfunandfamily.com/
[INFO] Log Level: Normal
[INFO] BackWPup job: Job with ID 1
[INFO] Logfile is: backwpup_log_b56bf2_2019-10-02_08-29-24.html
[INFO] Backup file is: 2019-10-02_08-29-24_RZKBSVHU01.zip
[02-Oct-2019 08:29:24] 1. Try to backup database …
[02-Oct-2019 08:29:26] Connected to database bhamfun9903_bff2014 on localhost
[02-Oct-2019 08:29:30] Added database dump “bhamfun9903_bff2014.sql” with 58.97 MB to backup file list
[02-Oct-2019 08:29:30] Database backup done!
[02-Oct-2019 08:29:31] 1. Trying to make a list of folders to back up …
[02-Oct-2019 08:29:36] Added “wp-config.php” to backup file list
[02-Oct-2019 08:29:36] 558 folders to backup.
[02-Oct-2019 08:29:36] 1. Trying to generate a file with installed plugin names …
[02-Oct-2019 08:29:36] Added plugin list file “Birmingham-Fun-and-Family-Magazine.pluginlist.2019-10-02.txt” with 3.54 KB to backup file list.
[02-Oct-2019 08:29:36] 1. Trying to generate a manifest file …
[02-Oct-2019 08:29:36] Added manifest.json file with 10.62 KB to backup file list.
[02-Oct-2019 08:29:36] 1. Trying to create backup archive …
[02-Oct-2019 08:29:36] Compressing files as ZipArchive. Please be patient, this may take a moment.

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