I gave it a go at founding a startup. Short story - sales cycle was too long and I've run out of cash even with customers coming in. I need to find work to pay the bills now. I'm a developer at heart - I can code the MEAN stack all day long. But looking at jobs out there I see more need for React, GO etc. I'm going to do a project in another language to hone my skills, I've got java, c#, c++, javascript, python experience. What stack should I pick up to have the best shot at getting a dev gig now? ( I was in IT Management/PM for a while so I only kept up my MEAN stack skills on the side while I was developing my startup application so this is why I am asking about it now. I would prefer to get back into development.