Keaton TF Evans

So I’ve been using my Sekonic Studio Deluxe 3 for years now with traditional sources. Definitely a highly reliable light meter, but of course it (like many light meters) can’t accurately meter LED’s. I’ve done a lot of reading, and I am still foggy on how to properly meter for LED lighting. Could someone offer me an ELI5 (explain it like I’m five) of why a standard Lux meter can’t accurately measure LED’s and how to then properly meter for them? thanks in advance!