Pyansys can't read rst files from ansys 2021 R2

I'm using Ansys 2021 R2, student version. Pyansys is showing the following error: 'ValueError: negative dimensions are not allowed', while reading an Ansys rst file. Pyansys is interpreting the rst files generated from earlier Ansys versions accurately. Does anybody have a clue about the issue?

Start by reproducing the rst-file read failure with an Ansys 2021 R2 student-version result file and compare it with an earlier-version file. Trace the reader path that raises “ValueError: negative dimensions are not allowed”; done means 2021 R2 rst files are read correctly without regressing earlier formats.

Written by the indexing model from the issue text.