Error on nginx

Hello community,

I'm having issues with Safeline in some modules of my application. This is the error I'm getting:

2025/05/20 17:40:43 [error] 34#0: *66 readv() failed (104: Connection reset by peer) while reading upstream, client: 179.7.180.32, server: ..., request: "POST /inteligencia-artificial/analizar-documento HTTP/1.1", upstream: "http://unix:/app/sock/tcd_error.sock:/.safeline/forbidden_page", host: "clinet-backup.cliandina.com", referrer: "https://.../inteligencia-artificial"
2025/05/20 17:41:03 [error] 36#0: *109 readv() failed (104: Connection reset by peer) while reading upstream, client: 179.7.180.32, server: ..., request: "POST /inteligencia-artificial/analizar-documento HTTP/1.1", upstream: "http://unix:/app/sock/tcd_error.sock:/.safeline/forbidden_page", host: "clinet-backup.cliandina.com", referrer: "https://.../inteligencia-artificial"

I've made several changes to the nginx configuration, but the error persists. I need your help.

Thanks!