<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false">Dear QE Users Forum,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I am encountering the following error after running a nscf calculation on QE 7.2:</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><div><div> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div> task # 0</div><div> from qes_read: matrixType : error # 10</div><div> required attribute rank not found, can't read further, stopping</div><div> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div><br></div></div><br></div><div dir="ltr" data-setdir="false">Please advise me on how to address this. Below is the input file:</div><div dir="ltr" data-setdir="false"><br><div><div>&system</div><div>ibrav=1,</div><div>celldm(1)=15,</div><div>nat=3,</div><div>ntyp=2,</div><div>ecutwfc=44.099, </div><div>ecutrho=440.99, </div><div>/</div><div>&electrons</div><div>conv_thr=1.0d-6,</div><div>mixing_beta=0.7,</div><div>/</div><div>&ions</div><div>ion_dynamics = 'bfgs',</div><div>/</div><div>ATOMIC_SPECIES</div><div>C 12.011 C.pbe-n-kjpaw_psl.1.0.0.UPF</div><div>O 15.999 O.pbe-n-kjpaw_psl.1.0.0.UPF</div><div>ATOMIC_POSITIONS {angstrom}</div><div>C 7.5000000000 7.5000000000 7.5000000000 0 0 0</div><div>O 8.6736893489 7.5000297668 7.5000297668</div><div>O 6.3262902178 7.4999803011 7.4999803011</div><div>K_POINTS {gamma}</div></div><br></div><div dir="ltr" data-setdir="false">Best regards,</div><div dir="ltr" data-setdir="false">Sol Loja</div></div></body></html>