Title: Causes 500 error
Last modified: May 25, 2017

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# Causes 500 error

 *  Resolved [David 279](https://wordpress.org/support/users/david-279/)
 * (@david-279)
 * [9 years ago](https://wordpress.org/support/topic/causes-500-error/)
 * It is causing 500 server errors on the site, the webhost says “it’s due to something
   on your website trying to connect to cloudflare over IPv6 which is causing the
   site to hang for long periods of time waiting for the connection. See the following
   strace example:
 * connect(9, {sa_family=AF_INET6, sin6_port=htons(443), inet_pton(AF_INET6, “2400:
   cb00:2048:1::6810:180a”, &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) 
   = -1 ENETUNREACH (Network is unreachable)
    close(9) = 0 socket(PF_INET6, SOCK_STREAM,
   IPPROTO_TCP) = 9 fcntl(9, F_GETFL) = 0x2 (flags O_RDWR) fcntl(9, F_SETFL, O_RDWR
   |O_NONBLOCK) = 0 clock_gettime(CLOCK_MONOTONIC, {3512165, 413249357}) = 0 clock_gettime(
   CLOCK_MONOTONIC, {3512165, 413277775}) = 0 connect(9, {sa_family=AF_INET6, sin6_port
   =htons(443), inet_pton(AF_INET6, “2400:cb00:2048:1::6810:190a”, &sin6_addr), 
   sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 ENETUNREACH (Network is unreachable)
   close(9)
 * You can see that it’s giving “Network is unreachable” meaning it’s failing but
   it does this for large periods of time and won’t load the site until it basically
   gives up trying the connection. This means if you remove whatever part of your
   site that makes this connection whether it’s a plugin or theme related query 
   then it should fix the loading issues on your website.”
 * Through a process of elimination I traced this back to the redux framework, with
   plugin activated time to load site (if it actually loads and does not give a 
   500 error) 55 or more seconds, with plugin disabled 5.8 seconds

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 * 0 replies
 * 1 participant
 * Last reply from: [David 279](https://wordpress.org/support/users/david-279/)
 * Last activity: [9 years ago](https://wordpress.org/support/topic/causes-500-error/)
 * Status: resolved