Hello Rami,
According to your log file the backup doesn't complete at all. In fact, we can see that only the first two steps run. This is exactly before Akeeba Backup issues an HTTP redirection to step the backup. This leads me to believe that you have not set up your front-end backup correctly.
If you are using wget or curl please follow our documentation instructions to create the proper command line for running the backup. For example, wget requires the --max-redirect parameter. If you are already using our documented command line, also shown in the component's Scheduling Information page, please contact your host as they may have disabled redirection following in wget or curl.
If you are using WebCron please follow our documentation's instructions, also shown in the component's Scheduling Information page, to set up the CRON job in a way that supports following redirections and not timing out.
If you are using a different third party CRON service or your host's facility to access URLs on a schedule ("fake" CRON) please note that you MUST ensure that they follow HTTP redirections. If they don't the front-end backup won't work, as explained in our documentation.
Nicholas K. Dionysopoulos
Lead Developer and Director
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