PHP message: destruye session

the PHP docker container throws the following error, help pls:

[error] 31#31: *17 FastCGI sent in stderr: "PHP message: destruye session" while reading upstream, client: 172.19.0.1, server: localhost, request: "POST /auth/login HTTP/1.1", upstream: "fastcgi://172.19.0.3:9000", host: "localhost:8001", referrer: "http://localhost:8001/login"

for port 8001 on my nginx