<div dir="ltr"><div>Dear Sir/Madam</div><div>I am Thejas, final year Masters student at
Central University of Kerala(India), my Masters project is on
Gravitational waves. As a part of it I have to work with Einstein's
toolkit, unfortunately I am having some error while running poisson par file, could you please guide me regarding this?, for clarification I am attaching the image and I would also like to know how to implement friend in einstein's toolkit.</div><div>Warm Regards<br></div></div>