EConnectReset error

Good morning,
I have a problem with connection to a server using Postman. I’m using Postman for tests with Filemaker data api19. On Last week connection was running, since last friday I have not been able to connect to server by POstman, saying EconnectReset error. What is this error? And what can cause it? Firewall on server is disabled, no antiviruses are installed

Best regards

Hi @fra30003
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