Please suggest!!!! Not happy in the current organization because of the domain which is allotted. Should I leave the company or stay there

Hi all. I need your advice. I passed out in 2023 and joined Capgemini as a software engineer. I have been tagged to the Guidewire project but I am not getting interested in that domain because the main problem is that the Guidewire developer demand is only in service based companies and few product based only. Apart from those few companies, no one even knows what Guidewire is. I don't want to work in Guidewire. Everyday feels like I am wasting my time. I don't want to learn guidewire and waste my time. My manager has now even started scolding that I can't even fix one jira or issue alone, I know nothing about guidewire and to be honest I don't even want to learn it Whenever I get free time I have started learning mern stack development. But this will take a lot of time to do it properly and then switch to another company. Now what should I do? Stay in Capgemini only till I get prepared in 1-2 years completely or leave the job and focus on learning mern.