我没有服务器运行，错误502在25分钟内，我在日志中看到以下内容：
2017/08/19 19:36:30 [error] 7652#0: *978 upstream sent unexpected FastCGI record: 3 while reading response header from upstream, client: 207.46.13.158, server: vamdodoma.ru, request: "GET /catalog/2-mestnye-divany/S39861885.html/ HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/14617404421463.sock/socket:", host: "vamdodoma.ru"
2017/08/19 19:36:31 [error] 7651#0: *622 FastCGI sent in stderr: "PHP Fatal error: Out of memory (allocated 262144) (tried to allocate 8589938688 bytes) in Unknown on line 0" while reading response header from upstream, client: 46.237.19.175, server: vamdodoma.ru, request: "GET /api/app.getCities HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/14617404421463.sock/socket:", host: "vamdodoma.ru"
2017/08/19 19:36:31 [error] 7651#0: *622 upstream sent unexpected FastCGI record: 3 while reading response header from upstream, client: 46.237.19.175, server: vamdodoma.ru, request: "GET /api/app.getCities HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/14617404421463.sock/socket:", host: "vamdodoma.ru"
服务器PHP，NGINX，MySQL
在php.ini memory_limit = 48000M
中为什么内存不足？