unable to use entviz : nil pointer dereference in atlas/sql

[timebis]

I use entgo with a valid schema located in ./ent/schema
I am not able to use go run -mod=mod ariga.io/entviz ./ent/schema

Simple repro :

mkdir simpleRepro
go mod init entdemo
go run -mod=mod entgo.io/ent/cmd/ent new User
go run -mod=mod ariga.io/entviz ./ent/schema

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x91add3]

goroutine 1 [running]:
ariga.io/atlas/sql/internal/specutil.FromTable(0xc0003aa2c0, 0xf249e0, 0xf249a8, 0xf24a30, 0xf24758, 0xf24870)
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/sql/internal/specutil/convert.go:634 +0x513
ariga.io/atlas/sql/sqlite.tableSpec(0xc0003aa2c0)
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/sql/sqlite/sqlspec.go:173 +0x4a
ariga.io/atlas/sql/internal/specutil.FromSchema(0xc0003aa370, 0xc0003f7b28)
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/sql/internal/specutil/convert.go:542 +0x20a
ariga.io/atlas/sql/sqlite.schemaSpec(0x0?)
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/sql/sqlite/sqlspec.go:165 +0x3f
ariga.io/atlas/sql/internal/specutil.Marshal({0xe0d040, 0xc0003aa370}, {0x10116a0, 0xc0002fe140}, {0xf24a50?, 0xf24a68?})
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/sql/internal/specutil/spec.go:63 +0xfe
ariga.io/atlas/sql/sqlite.MarshalSpec(...)
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/sql/sqlite/sqlspec.go:69
ariga.io/atlas/sql/sqlite.init.func1({0xe0d040?, 0xc0003aa370?})
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/sql/sqlite/sqlspec.go:297 +0x39
ariga.io/atlas/schemahcl.MarshalerFunc.MarshalSpec(0x1?, {0xe0d040?, 0xc0003aa370?})
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/schemahcl/spec.go:414 +0x26
ariga.io/entviz/internal/entviz.HCL({0x10197a8, 0xc000344c40}, {{0x7ffc331f9de1, 0xc}, {0xe3e65b, 0x7}, {0xe9b128, 0x2d}, 0x0})
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/internal/entviz/entviz.go:105 +0x5a3
main.main()
        /home/thomas/go/pkg/mod/ariga.io/[email protected]/main.go:41 +0x293
exit status 2

do you have an idea, where does it come from ?