Fixed it.
The current /etc/cron.d/minera file is:
*/5 * * * * minera php /var/www/minera/index.php app cron_stats
this should be:
*/5 * * * * minera php /var/www/minera/index.php app cron
Perhaps you will update this in the git.
AH! you found it! Yes, definitely that. This is because I had update that url controller but I forgot to put a redirect for the old one for retro compatibility. The git code was fixed this morning.
So the best way to solve this kind of problems is almost always do a "git pull" to get the latest code and if I'm not too much old I remembered what I have forgotten before

Thanks for post and patience.