Resource not found

GET /lifecycle/flows/signup?continue=https://uc.appengine.google.com/_ah/conflogin?state%3D~AJKiYcG2bjajuCJpgBKtdjifsRwJ0WuOk8xhlZWrjiigd6XYFsaKUEgOel0dWn4878EPw1OhEKa-xpL7n05ROeI5d-XqOP3MlRxPVFW4h6GREvSMi7C2Xv8inZ_BT_yngDmsVlcmE61FwU7VbidLTVGnz1u64_GtqPq54HpIl88YNmB4imkL4_4_VCPoF5lXt99SVmA4T1kJxxWicQjFI71rD_NX-jJu53Ejtd-Y178hPhxADTc_ssU&dsh=S1560831941:1714977784591249&flowEntry=SignUp&flowName=GlifWebSignIn&ifkv=AaSxoQywgcynsZ7YT78CdqhWzpHcw3GOrH47TLrx24aw9jWjHg5XJCFEAIFlu5YNQLAYsMfg59YdUA HTTP/1.1
Accept: */*
Content-Type: ; charset="utf-8"
Host: openradar.appspot.com
Traceparent: 00-c3c8821fb154e661de2f39607cfb6649-4bdb6a985ce5e1b9-00
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
X-Appengine-City: columbus
X-Appengine-Citylatlong: 39.961176,-82.998794
X-Appengine-Country: US
X-Appengine-Region: oh
X-Cloud-Trace-Context: c3c8821fb154e661de2f39607cfb6649/5466079775370371513