Error: UUID is empty

Settings example:
UUID 510d3d65-058a-be3c-52c4-25c1e02e65c3
WS_PATH /ntmmdv21
XHTTP_PATH /qzz0fsac

WebSocket config.json:
https://mega-1i4.pages.dev/ntmmdv21/?fragment=true&uuid=510d3d65-058a-be3c-52c4-25c1e02e65c3

XHTTP config.json:
https://mega-1i4.pages.dev/qzz0fsac/?fragment=true&uuid=510d3d65-058a-be3c-52c4-25c1e02e65c3

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