Error of using isoreader to read .dxf file

[whereisAphrodite]

Hi Seb! King from NJU. Excited to use isoreader. Just encountered some issues. After I try to read some dxf files by function iso_read_continuous_flow, the problem came with each file, which is "extract_dxf_raw_voltage_data missing value where TRUE/FALSE needed". Could u pls help me fix this or provide some explanation? Thanks for your time!