command line merge: /home/cadviewer/onlinedemo.cadviewerjs.com/cadviewer_4_1_0//converters/dwgmerge2020/linux//DwgMerge_2020xr_L64_20_00_01 -base="" -merge="" -out="" -over -lpath="/home/cadviewer/onlinedemo.cadviewerjs.com/cadviewer_4_1_0//converters/dwgmerge2020/linux/"  255