ERROR: VHPI NOTOTM (cocotb)

[IgorAmosov]

Cannot iterate on type vhpiInternalRegions using a reference handle of type <unknown>. (cocotb)
         ../my_module.sv, 7: (cocotb)

../my_module.sv, 7: - It is a definition of top module
Hello! I am using cocotb==1.7.2 and cocotb-test==0.2.3 with Xcelium now.
When I run pure cocotb(through its Makefile) everything is OK!
But when i run it with cocotb-test i receive the error mentioned above.
What does this error mean?

This error have no influence to simulation process but corrupt return code (ERROR despite simulation is OK)

[themperek]

Highly unlikely this is cocotb-test. There should te some other difference.