Error nginx hestia, when disabling any firewall rule

Hello, the error occurs when I pause any firewall rule. Immediately an error appears in /var/log/hestia/nginx-error.log

[error] 11639#0: *7 FastCGI sent in stderr: "PHP message: PHP Notice: session_start(): Ignoring session_start() because a session is already active in /usr/local/hestia/web/inc/main.php on line 2" while reading response header from upstream, client:, server: my.DomainOrIP. com, request: "GET /suspend/firewall/?rule=12&token=2a8edfb6bbd17666d89db03f601312cf HTTP/2.0", upstream: "fastcgi://unix:/runun/hestia-php.sock:", host: "", referrer: ""

How to fix this?