Symlink Problems with Trixbox 2.8


I am using Freepbx 2.8 with trixbox At the FreePBX System Status there are the following symlink problems:

retrieve_conf failed to sym link:
/var/lib/asterisk/bin/restoreastdb.php from backup/bin
/var/lib/asterisk/bin/ from backup/bin
/var/lib/asterisk/bin/dumpastdb.php from backup/bin
This can result in FATAL failures to your PBX. If the target file exists and not identical, the symlink will not occur and you should rename the target file to allow the automatic sym link to occur and remove this error, unless this is an intentional customization.

How can I fix this?

Thanks in advance,