Error: no property 'type_id' for type 'test.env'

[geeta-yadav]

Compilation of below code is giving type_id error:

import esdl;
import uvm;
import std.stdio;

class test_root: uvm_root
{
mixin uvm_component_utils;
}

class TestBench: RootEntity
{
uvm_root_entity!(test_root) tb;
}

class cfg: uvm_object
{
uint z;
string covert2string()
{
string s;
writeln(s, "{ z = %0d }", z);
return s;
}
}

class env: uvm_component
{
uvm_bitstream_t A;
uint B;
uvm_object dummy;
cfg C,D;

this(string name, uvm_component parent)
{
super(name, parent);
}

override void build()
{
if(!uvm_resource_db!(uvm_bitstream_t).read_by_name(get_full_name(), "A", A, this))
{
uvm_error("NOCONFIG", "A not located in resource pool");
}
writeln("A = %0d", A);

if(!get_config_int("B", B))
  {
uvm_error("NOCONFIG", "B not located in resource pool");
  }
writeln("B = %0d", B);

if(!uvm_resource_db!(uvm_object).read_by_name(get_full_name(), "C", dummy, this))
  {
uvm_error("NOCONFIG", "C not located in resource pool");
  }
else
  {
if(C!=cast(cfg) dummy)
  {
    uvm_error("NOCONFIG", "C has incorrect type");
  }
else
  {
    writeln("C = %s", C.convert2string());
  }
  }

if(!get_config_object("D", dummy, 0))
  {
uvm_error("NOCONFIG", "D not located in resource pool");
  }
else
  {
if(D!=cast(cfg) dummy)
  {
    uvm_error("NOCONFIG", "D has incorrect type");
  }
else
  {
    writeln("D = %s", D.convert2string());
  }
  }

if(A == 14 && B == 98 && C.z == -122 && D.z == 88)
  {
writeln("** UVM TEST PASSED **");
  }
else
  {
writeln("** UVM TEST FAIL **");
  }

}
}

class test: uvm_component
{
mixin uvm_component_utils;

env e;

this(string name, uvm_component parent)
{
super(name, parent);
}

override void build()
{
cfg c, d;

e = new env ("env", this);
set_config_int("*", "A", 14);
uvm_resource_db!(int).set("*", "B", 98, this);

c = new cfg;
c.z = -122;
set_config_object("*", "C", c, 0);

d = new cfg;
d.z = 88;
uvm_resource_db!(uvm_object).set("*", "D", d, this);

}

override void report()
{
uvm_resource_pool rp = uvm_resource_pool.get();
rp.dump();
}
}

void main(string[] argv) {
TestBench tb = new TestBench;
tb.multiCore(0, 0);
tb.elaborate("tb", argv);
tb.simulate();
}

Error:

Error: no property 'type_id' for type 'test.env'
Error: template instance uvm.base.uvm_component._uvm__auto_build!(test, env, 0LU, ) error instantiating

Regards
Geeta