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A client has a Singles entry with a Matrix block defined that contains a few text fields, and one image field. They've created approximately 450 instances of this Matrix block, and can no longer update the page. Craft throws a 500 error. Craft logs just show a basic

exception 'Craft\HttpException' in /srv/[clientName]/releases/20170418025256/craft/app/controllers/TemplatesController.php:59

and nothing of use in the Apache error logs. Anyone have experience with this sort of error, or confidence that this would be a Craft bug?

  • Is the HTTP 500 error Craft-styled or is it a general webserver HTTP 500 error? – Andris Sevcenko Sep 12 '17 at 8:40
  • Craft-styled, sorry should have specified. – Nim Wunnan Sep 13 '17 at 0:04
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Most likely you're bumping into php.ini limitations. I'd bump the values of memory_limit, post_max_size and max_input_vars and see if that helps.

They are common culprits when POSTing large amounts of data (which is what 450 Matrix Blocks would be considered).

  • Excellent, thanks. The memory allocation was pretty hefty, but I hadn't thought to look at post_max_size or max_input_vars. Upped both and it's usable again. – Nim Wunnan Sep 15 '17 at 0:46
  • One note -- post_max_size allows 0M as a setting for unlimited size, but Craft will apply this literally to asset uploads as a size limit of 0, so should be specified as a large number if you want to increase it. – Nim Wunnan Sep 15 '17 at 21:53

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