it's been doing this for the last few snapshot versions. it will flash the mojang logo and then just crash. it happens as far back as 18w19b, 18w16a being the first one on the list that does still load. i even deleted my .minecraft folder and i'm still getting this issue.
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it keeps making a new one. how do i get it to not do that?

Try attaching the crash report produced here.

Thank you for your report!
However, this issue has been temporarily closed as a Awaiting Response.
We do not have enough information to find the cause of this issue.
In case of a crash please add the file [.minecraft/launcher_log.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]
to this ticket.
If there is no crash log, please follow that guide.
Once attached, the report will be reopened automatically.
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See MC-129374