Error: UUID is empty

Settings example:
UUID 21a81caa-f5a5-19e5-3e51-830f677bd044
WS_PATH /b8igv515
XHTTP_PATH /hkzcnp6a

WebSocket config.json:
https://mega-1i4.pages.dev/b8igv515/?fragment=true&uuid=21a81caa-f5a5-19e5-3e51-830f677bd044

XHTTP config.json:
https://mega-1i4.pages.dev/hkzcnp6a/?fragment=true&uuid=21a81caa-f5a5-19e5-3e51-830f677bd044

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