Support » Fixing WordPress » 500 Internal Server Error after hosting upgrade to php 5.3 & Parallels cp

  • Resolved anndonnelly


    We noticed we were no longer getting Gravity forms email notifications (a separate but related issue probably) and I went to the hosting support page and saw that the night before they had done some upgrades to the Parallels Operating System and upgraded from php 5.2 to 5.3, so I started investigating that issue. When I went to go to network admin (I’m running a WordPress network) to disable plugins to test, I was getting 500 internal server error. Then I realised that the front end of the site that’s the main site of the network was also getting the error: Checking my stats the site has been down since the hosting upgrade completed. Of the 7 sites in the network, I am getting this 500 error for 3 of them. The one thing they have in common is that they are registered under a different account on the hosting control panel. Though one of them I haven’t even mapped yet, so shouldn’t be a problem. I can’t access the admins of these to see if there may be a common plugin, etc.

    I have the hosting company checking it out, but I’m afraid that they’ll just come back and say that it’s a WordPress issue and I have to deal with it. I’ve seen other posts re issues with upgrades to the php but none like this exactly. As it’s only those domains I’m wondering if it’s an issue with Parallels. I can’t access Domain Mapping to make sure that it isn’t anything there.

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  • FYI Gravity Forms email notifications now working after upgrading Gravity Forms. Surprised I was able to do the upgrade if the main site of the network was down, but it did and that problem is fixed.

    This was solved by my webhosting company:

    “It looks like WordPress is simply running out of memory so we’ve upped the memory limit on your accounts and this has gotten the site back running.

    Most likely your site was running just under the maximum memory limit and some change in PHP5.3 memory management has pushed it over the edge (you can see it was an allocation of just 4K that failed) so it may be an indirect consequence of the new PHP version, as otherwise WordPress is fine on PHP5.3 (actually it is recommended).”

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