A new LAMMPS patch, 15 June 2020, has just been posted at lammps.sandia.gov/download.html and github.com/lammps/lammps/releases
We recommend all LAMMPS users of the previous version, 2 June 2020, to upgrade to this version ASAP, as this includes bugfixes to read_data and read_restart that were introduced by some code refactoring in that previous version.
The LAMMPS developers.