Server connect form issue

I am having an issue with the server connect form. Only logged in user can submit a form, otherwise it returns an error (401). Everything has worked perfectly so far. Now, regardless of whether the user is logged in or not, the form throws the error (401).

Wappler console indicates that something is wrong after user submits a form:
server-connect:server code: ‘ERR_HTTP_HEADERS_SENT’
server-connect:server } +10s
Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
at ServerResponse.setHeader (_http_outgoing.js:536:11)

Environment:
Wappler 3.3.3
OSx 10.15.6

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