Wan2 PPPoe Failed

Hello everyone, we have a fortigate 60F OS version 6.26, was working fine up until las month when the pppoe of the second interface started failing to renew, here are the logs.

child_exit()-655: A child process exits

pppoed_main()-865: PID 16872 exit

pppoed_main()-871: Interface wan2 exit

update_interfaces()-425: Update PPPoE interfaces

update_interfaces()-429: Invalidate PPPoE interface wan2

update_interfaces()-483: Found PPPoE interface wan2

update_interfaces()-566: PPPoE parameters of wan2 changed.

pppoed_main()-796: Start PPPoE interface wan2

pppoed_main()-799: PID of wan2 is 16877

parameters passed to pppd:

pppd 0 pppoed wan2 nopersist noipdefault noauth defaultroute default-asyncmap hide-password nodetach mtu 1492 mru 1492 noaccomp noccp nobsdcomp nodeflate nopcomp novj novjccomp user redacted lcp-echo-interval 5 lcp-echo-failure 3 sync plugin /bin/pppoe.so pppoe_retry_time 1 pppoe_padt_time 1 pppoe_srv_name pppoe_ac_name pppoe_hostuniq 143f4440 pppoe_sock2parent 12 wan2 ipunnumbered 0.0.0.0 idle 0 unnumbered-negotiate enable