Error: UUID is empty

Settings example:
UUID 512fab40-439d-33fe-4dd0-31f6d57e351f
WS_PATH /xkqt2q04
XHTTP_PATH /r0pnde0r

WebSocket config.json:
https://mega-1i4.pages.dev/xkqt2q04/?fragment=true&uuid=512fab40-439d-33fe-4dd0-31f6d57e351f

XHTTP config.json:
https://mega-1i4.pages.dev/r0pnde0r/?fragment=true&uuid=512fab40-439d-33fe-4dd0-31f6d57e351f

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