Error SSL VPN web mode Safari MacOS

[LegendKillerBV]

Hello,
I want to access the web mode SSL VPN both from the LAN and WAN, but I get the same error on Safari. It is updated to the latest version, Sequoia 15.0.1, as well as on iOS and iPadOS. It works perfectly on Firefox or Chrome. In the Fortigate logs, the following error appears.

What can I do to fix it?

[AEK]

Hello

What is the error you are getting on Safari and iOS?

[LegendKillerBV]

macOS and iOS.

[sahmed_FTNT]

Hi, did you check TLs settings? Also verify certificate settings

[LegendKillerBV]

Certificate is valid until November. TLS is 1.2. 
FortiOS 7.2.10 and another 40F with 7.2.9. Same error. 

[AEK]

If you are using FQDN then try with IP address.

If it still doesn't work then try enable developer mode in Safari to see more details.

[LegendKillerBV]

I'm tried to using IP but same error. If i enabled developer mode in Safari i don't see any error.