How to start task (it is in sequence ) from testcase.? how to solve uvm_fatal (neither the item's sequencer nor dedicated sequencer has been supplied to start item in wr_seq)

In reply to cgales:

Giving an add-on. This si what the UVM Reference Manual is saying:
virtual task body();
This is the user-defined task where the main sequence code resides. This method should not be called directly by the user.

Writing your own task is legal, but it is not recommended.