fmcomms3 & Zedboard with gnuRadio errors

Generally, when do we get these following errors

free(): invalid pointer

RuntimeError: Unable to create buffer: -110

All parameters were set as default in fmcomms3 sink an source.

1 RX-1tx channel is used so do in setting l_clk/4 change is required.
[edited by: patil at 6:23 AM (GMT 0) on 2 Jun 2020]