Microsoft Windows [Version 10.0.26100.3323]

curl 8.10.1 (Windows) libcurl/8.10.1 Schannel zlib/1.3 WinIDN

curl: option --d: is unknown

--data '{"day":"Friday"}'

[Error] SyntaxError: Unexpected token ''', "'{day:Friday}'" is not valid JSON HTTP/1.1 500 Internal Server Error

--data '{\"day\":\"Friday\"}'

[Error] SyntaxError: Unexpected token ''', "'{"day":"Friday"}'" is not valid JSON HTTP/1.1 500 Internal Server Error

--data "{\"day\":\"Friday\"}"

HTTP/1.1 200 OK