Itunes connect said below
Your app crashed on iPad and iPhone running iOS 11.2.6 connected to an IPv6 network when we typed a name of a street or a place in the search field and tapped on Confirm
This occurred when your app was used:
On Wi-Fi
I really don't get to it because It dosen't have any problem on my iphone / pad for 11.2.6 version.
they sent me log and import it to xcode to review(changing extension to .crash as they said )
log say as belows. but it dosne't imply any code - level problem... at least, I can't find one.
and for ipv6....I can't find any way to check it on ipv6 setting I heard that If i go to configure setting and share, I turned on internet sharing, then I can use my wifi compatible with ipv6, but as shown in second pic, I can't see any ipv6 sign.
Incident Identifier: 5D574C42-BDB2-401D-B450-BEC7404FBD3F