[MC-120017] Custom Advancement reset on reboot on server ?

I don't know why, but my custom advancements are reset on reboot of my server.

so when player login on server, i have this:

Ignored advancement 'minecraft:challenges/welcome' in progress file ./world/advancements/871f191a-0637-4c6b-8115-7229c1c8332a.json - it doesn't exist anymore?

but advancements are already there. (advancement copy/paste in end and nether too)

Comments 2

SnipUndercover 2017-08-07T18:14:29Z

Attach the advancement .json file for further inspection.

[Mod] Neko 2017-08-07T21:51:47Z

Thank you for your report!
However, this issue has been closed as Invalid.

Your game, launcher or server is modified.
If you can reproduce the issue in a vanilla environment, please recreate the issue.

Any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the creator of the plugin or resource pack.
If you have problems on large servers, such as The Hive and Hypixel, please contact them first as they run modified server software.

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