Greetings!
According to the API, your [url=https://dungeon.report/pgcr/11064386977]most recent run[/url] was completed from a checkpoint; the solo triumph wants the dungeon completed in full, without checkpoints, disconnects, or error codes. Unfortunately, you'll have to run it again meeting those requirements.
As for the Sever challenge(s), did you use the Scythe, explode any barrels/scorn lanterns, or use a weapon with explosive perks like Firefly/Dragonfly? Those may invalidate the challenge if used because they may count as solar damage. The [url=https://www.bungie.net/en/Explore/Detail/News/51489]6/23/2022 TWAB[/url] mentions this for last week's Empty Grief seasonal challenge, but it might apply to this week's Sparkling Rage challenge too.
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Oh shoot i did do over a period of time using checkpoints, darn, thanks for the info!