Normally we recieved this kind of issue due to AV upadtion of database.
you can cheke below link for it.
https://kb.juniper.net/InfoCenter/index?page=content&id=KB31429&cat=FIREWALL_IPSEC_VPN&actp=LIST
Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too!!!
Regards,
Umesh Sharma