Sudden NAT handling change in FreePBX 13

Hi,

This error:

[Whoops\Exception\ErrorException]
file_get_contents(/sys/class/net/bonding_masters/type): failed to open stream: file or directory not found

indicates of permission problem usually, but just to be on the safe side, can you paste the results of:

ls -la /sys/class/net/bonding_masters/type

and if it is exists, please paste the contents of the file:

cat /sys/class/net/bonding_masters/type

Thank you,

Daniel Friedman
Trixton LTD.