Dear Zahra, Try to review the coordinates of the K high symmetry point in the block BanddLine
BandLinesScale pi/a # Default Value
%block BandLines
1 1.1547 0.0000 0.0000 \M
300 0.0000 0.0000 0.0000 \Gamma
300 0.0000 1.3333 0.0000 \K ******************
300 1.1547 0.0000 0.0000 \M
%endblock BandLines
BandLinesScale pi/a
%block BandLines
1 1.1547005 0.000 0.000 M
35 0.0000000 0.000 0.000 \Gamma
35 1.1547005 0.666666667 0.000 K
20 1.1547005 0.000 0.000 M
%endblock BandLines
