Sample post request {"secret":"0x4AAAAAAAGk*","response":"0.ArpE5qDnx6HZ9I8ekDfNUFKhwMxkRIw5sKCCWe_OmsyzG8k5npsGlQMPYdEUMIBPtd4FquPnTf8rmIZxfsWJO1wcHE4f6CcJQPEFWrsKUcAapmtArGL5J9MIZa2DDkN4C-Bn6OWZ_R4v7L68uBlKe5Sa3p5nEs7SQ2-HB9nRQMJCTdI1lpb2xyFFtZ11oqGm3UliZa2-gKgiN99qCOKmuJmiDFacJU71FSWzpaPDSjVSPDj9tsB-d-NLnfVftcNR1kcw7mN2Pkpb9EUgIM4r4IUdZmjctw8ORO-B11CfSeTMITyif7HDGVHuAcHWxBJnAuxi06anFOGFCpCTG5E9udim6QJuAcptbcU_SZLUrXp-jACJadRPdmFWvm6ktrbKgNUo_L9uGHNwFIGXeiD_DxkZAKznimbExGLTFN1CuC8.hTmq3J2NsMDXf07qbBqvRw.782d74be93131b023b184ddb2419d79dea2319b4c6f92da0db6b1cc793ef8102","remoteip":"127.0.0.1"}
The response status is 404, the "Response" property in the request body is just "Invalid"
Resolved! We were posting to "https://challenges.cloudflare.com/ turnstile/v0/siteverify/" with a trailing "/". It was working fine this way until about 3 weeks ago when it started erroring out. Once we removed the trailing "/"("https://challenges.cloudflare.com/ turnstile/v0/siteverify"), everything is working again.