Bad ph? Overfert? Bad airflow? 24h of continuous exposition to ligths?

Your plant is “praying” due to excessive heat and not enough humidity. It senses the added heat and reduced humidity as an over-bearing sun, so it folds its edges up to shade the leaf. Unfortunately with a stationary light source in an indoor grow setting, this behavior by the plant is pointless. Reduce the heat and increase the humidity.

Light burn is definitely a possibility. My plants to curl up like that when the environment is hot and/or humidity is off. Always check pH levels to make sure your plant is receiving all the nutrients it requires. Cheers.

Looks primarily like light burn and it might be a little hot in the grow room, what’s the temp at at that really damaged bud? Although I’ll say I have limited knowledge I’d say It’s Primarily light burn Though, just from the experience of what happened to my plants. when I raised the lights I noticed a vast difference in the new growth, the leaves that got burnt are done. If your exposed leaves(new & old leaves) are showing strange burns and Deficiencies as well the ones closest to the light you know something’s up. for the most part Closer leaves and more exposed leaves/buds will show more damage. Im going to invest in a light meter, they are like $50 USD and maybe you should do the same, and with some research on how much light you should be giving your plants. it’ll help take the guess work out of it and you’ll be able to know whether or not light is actually your issue! Hope that helps and good luck!!!