I am attempting to perform molecular dynamics (MD) simulations using the AMBER suite, specifically utilizing Antechamber and the GAFF force field for a polymer system. However, after executing the following command:

antechamber -i ligand_new.pdb -fi pdb -o ligand.mol2 -fo mol2 -c bcc -s 2

the process has remained unresponsive for an extended period, displaying only:

running : sqm -o -i sqm.in -o sqm.out

I would appreciate any insights on how to resolve this issue.