Error: UUID is empty

Settings example:
UUID 8cefdce7-6524-cba9-99fa-3e5d9f714c49
WS_PATH /731qm8ws
XHTTP_PATH /u027m9ki

WebSocket config.json:
https://nettya.pages.dev/731qm8ws/?fragment=true&uuid=8cefdce7-6524-cba9-99fa-3e5d9f714c49

XHTTP config.json:
https://nettya.pages.dev/u027m9ki/?fragment=true&uuid=8cefdce7-6524-cba9-99fa-3e5d9f714c49

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