Irrelevant
I think there is a language mixup error in your current Akeeba Backup Pro version 3.3.11
This is the error message upon installation:
JInstaller: :Install: File does not exist ...\install_4f0311c805b5f\plg_oneclickaction\language\da-DK\de-DE.plg_system_oneclickaction.sys.ini
da_DK Danish
de-DE German