Solver message 99781
Message text
** ERROR 99781 ** Zero shape factor for element element number. The default shape factor is 1. Change the shape factor of the element and run the analysis again.
Explanation
The element has a zero shape factor. The default shape factor is 1.
Resolution
Identify the element by clicking (Modeling > Query Entities), and enter an appropriate non-zero value for the shape factor by right-clicking the element and selecting Properties. Re-run the analysis.