SSL handshake error - Fiori

When implementing fiori apps , facing this below error , at gateway client.

and unable to figure out why hostname is being appended in the URL area only for this app. Other apps work perfectly , and host name is also not appended there.

Removing the hostname results as in the error on the right .

Any suggestions experts and community?

Andre Fischer

Masayuki Sekihara

Ekansh Saxena

Krishna Kishor Kammaje

Thanks in advance,

Kiran