EXTREMELY IMPORTANT: Please attach a ZIP file containing your Akeeba Backup log file in order for us to help you with any backup or restoration issue. If the file is over 2Mb, please upload it on your server and post a link to it.
Description of my issue:
I realize you do not support Akeeba Subscriptions, but for those people like me still using that component that may search this forum, the new FOF30 library file included with Akeeba Backup 5.6 will cause Akeeba Subscriptions to stop working. My previous version of that file before upgrading was 3.1.0 and Akeeba Subscriptions works fine with that version.