check-condition in resolvetypes for lambda defined in universe

[michaellilltokiwa]

a := [("Alice", 23), ("Bob", 12), ("Charly", 32)]
age_sum := a.map (p -> p.1) |> sum
count   := a.map (p -> 1) |> sum
say "average age {age_sum / count}"

error 1: java.lang.Error: check-condition failed: This.java:249 "(Errors.any() || (or != null));"
        at dev.flang.util.ANY.check(ANY.java:439)
        at dev.flang.ast.This.resolveTypes(This.java:249)
        at dev.flang.ast.AbstractCurrent.resolveTypes(AbstractCurrent.java:117)
        at dev.flang.ast.Feature$ResolveTypes.action(Feature.java:1381)
        at dev.flang.ast.AbstractCurrent.visit(AbstractCurrent.java:94)
        at dev.flang.ast.Call.visit(Call.java:1167)
        at dev.flang.ast.Resolution.resolveType(Resolution.java:574)
        at dev.flang.ast.Call.lambda$resolveTypesOfActuals$9(Call.java:953)
        at dev.flang.ast.Feature.whenResolvedTypes(Feature.java:1460)
        at dev.flang.ast.Call.resolveTypesOfActuals(Call.java:945)
        at dev.flang.ast.Call.resolveTypes(Call.java:2388)
        at dev.flang.ast.Feature$ResolveTypes.action(Feature.java:1374)
        at dev.flang.ast.Feature$ResolveTypes.action(Feature.java:1365)
        at dev.flang.ast.Call.visit(Call.java:1170)
        at dev.flang.ast.Resolution.resolveType(Resolution.java:574)
        at dev.flang.ast.Call.lambda$resolveTypesOfActuals$9(Call.java:953)
        at dev.flang.ast.Feature.internalResolveTypes(Feature.java:1434)
        at dev.flang.ast.Resolution.resolveOne(Resolution.java:454)
        at dev.flang.ast.Resolution.resolve(Resolution.java:421)
        at dev.flang.fe.SourceModule.createASTandResolve(SourceModule.java:272)
        at dev.flang.fe.FrontEnd.<init>(FrontEnd.java:195)
        at dev.flang.tools.Fuzion.lambda$parseArgsForBackend$3(Fuzion.java:1067)
        at dev.flang.tools.Tool.lambda$run$0(Tool.java:141)
        at dev.flang.util.Errors.runAndExit(Errors.java:957)
        at dev.flang.tools.Tool.run(Tool.java:141)
        at dev.flang.tools.Fuzion.main(Fuzion.java:626)


*** fatal errors encountered, stopping.
one error.