All right. You fixed the obvious misconfiguration but I bet that you've
still not followed all of our documentation instructions for setting up uploading to remote storage. Please check out https://www.akeebabackup.com/documentation/akeeba-solo/how-to-cloud-backup-basic-config.html As you can read there:
We will have to change just one option: Part size for archive splitting. Select the "Custom..." option and type in 20 in the text box that appears to the right of the drop-down. This setting will split our backup archive into multiple files, the maximum size of each one being the value of this setting.
You might wonder why we need to do that. PHP always has a strict time limit, i.e. the maximum time a PHP page may process data before the web server aborts it. Uploading the backup archives to cloud storage takes time, the exact amount of which depends on the size of the file and the network speed. The time limit and the bandwidth are beyond our control, so we can change the only parameter we can touch in order to avoid timeouts: the file size. Akeeba Solo / Akeeba Backup Professional is smart enough to upload each part of the backup archive on a PHP page load of each own, so as to avoid timing out.
Note
Backup restoration is equally easy even when your backup archive is split in small chunks. Our software will automatically figure out that you are using a split backup archive and process all backup archive parts automatically, without requiring any additional input from you.
Please note that depending on your server and how fast it can transfer files to Box you may have to adjust the part size for split archives from anything between 2Mb to 50Mb. I would recommend to start with 20Mb per the documentation and adjust accordingly: if it still fails use a lower setting, otherwise try something higher.
Also note that when requesting support it is best to provide us with the backup log file. Otherwise we are proceeding based on guesswork.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!