ubuntu-24.04 LTS getting error during build with build-release.sh

[osmanfb]

uname -a
Linux osman-OMEN-by-HP-Laptop-17-ck1xxx 6.17.0-29-generic #29~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon May 11 10:30:58 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

I have installed prereqs as described but I also have dotnet-10.0 installed from ubuntu in addition to 8.0

osman@osman-OMEN-by-HP-Laptop-17-ck1xxx:~/CS/ksharp$ ./build-release.sh

K3CSharp Cross-Platform Release Build

Using .NET SDK: 10.0.107

Step 1: Clean

Step 2: Restore

Step 3: Build Release
/home/osman/CS/ksharp/K3CSharp.Comparison/ComparisonRunner.cs(109,26): error CS0117: 'ParserConfig' does not contain a definition for 'EnableLRSSafely'
/home/osman/CS/ksharp/K3CSharp.Comparison/ComparisonRunner.cs(466,35): error CS0117: 'Evaluator' does not contain a definition for 'RandomSeed'

If I cd to K3CSharp then "dotnet run" works. Do I need some additional libs from microsoft?
Thanks for all the docs.