Looks like a flameout on takeoff and an airborne reject from this unofficial social media report:
UPDATE from sources: "Info on the Raptor mishap at Fallon: The slide happened on takeoff. Appears to have been a left engine flameout when the pilot throttled up to take off. By the time he realized the engine was dead, he had already been airborne for a few seconds and raised the gear. The jet bounched for around 1500 feet, and then slide for about 5000 feet. They got it off the ground and on its landing gear last night, so the runway is clear. Chain is wanting it to be quiet still. It's very fresh obviously. But it's looking like the second engine failure on Elmo jets in a 7 day period."
More pictures in this
Aviationist article:
https://theaviationist.com/?p=53286