i've tested v2.2 of the template on v2022.3.29f1 of unity and it works as expected; some quick googling seems to show that TemplateData missing on webgl builds is a known issue, i'd recommend searching for answers on how to deal with that separately
oh I did that 1st; hardly a known issue as there are 2 posts in google, one says "create a custom template" which means not using yours and the other says "I fixed by resetting player settings".
