Hi, I got the same issue. All output logs of gNB, UE and core look okay, at least to explicit warning or errors, but there were no ICMP reply packets. I dumped the packets on the host machine, and both ICMP request and reply packets can be observed on my WiFi interface. Therefore I suspect that something is wrong somewhere while processing the ICMP reply.
I am using UERANSIM v3.1.0, not v3.0.2 which is used in the successful demonstration (probably) at this link | free5GC. Because v3.0.2 is not available as a tag, I could only try v3.0.3. But there is an error on the UE complaining PLMN cannot be found.
Any insights on this would be appreciated!
BR, Mu