Error: UUID is empty

Settings example:
UUID 51977433-5bad-1e30-1122-b5a8cc9fa4c5
WS_PATH /uqu9x9gj
XHTTP_PATH /5ddu8lc1

WebSocket config.json:
https://mega-1i4.pages.dev/uqu9x9gj/?fragment=true&uuid=51977433-5bad-1e30-1122-b5a8cc9fa4c5

XHTTP config.json:
https://mega-1i4.pages.dev/5ddu8lc1/?fragment=true&uuid=51977433-5bad-1e30-1122-b5a8cc9fa4c5

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