Light burn usually results in a dry crusty leaf; almost like a sun burn. It's very hard to tell buy the photos though.
The leaves do kind of have burnt tips that are in-ward curling, which is a symptom of light burn.
Are the leaves moist or crusty?
If they lean towards moist, you may have nutrient problems.
Nutrient issues can occur from a variety of different sources; most common being pH or growing medium that's the culprit of the issue.
What's your growing medium origin?
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