Minify & gzinflate(): data error PHP warnings

Hi,

I’m seeing many messages and stack traces like the following in my error log:

2014/08/14 13:50:04 [error] 1684#0: *205861 FastCGI sent in stderr: "PHP message: PHP Warning:  gzinflate(): data error in /xxxx/xxxx/wp-content/plugins/w3-total-cache/lib/W3/Minify.php on line 1144
PHP message: PHP Stack trace:
PHP message: PHP   1. {main}() /xxxx/xxxx/wp-content/plugins/w3-total-cache/pub/minify.php:0
PHP message: PHP   2. W3_Minify->process() /xxxx/xxxx/wp-content/plugins/w3-total-cache/pub/minify.php:30
PHP message: PHP   3. W3_Minify->get_custom_files() /xxxx/xxxx/wp-content/plugins/w3-total-cache/lib/W3/Minify.php:191
PHP message: PHP   4. W3_Minify->uncompress_minify_files() /xxxx/xxxx/wp-content/plugins/w3-total-cache/lib/W3/Minify.php:529
PHP message: PHP   5. W3_Minify->_uncompress() /xxxx/xxxx/wp-content/plugins/w3-total-cache/lib/W3/Minify.php:1044
PHP message: PHP   6. gzinflate() /xxxx/xxxx/wp-content/plugins/w3-total-cache/lib/W3/Minify.php:1144" while reading response header from upstream, client: 109.74.82.170, server: 7region.com, request: "GET /demo/wp-content/cache/minify/000002/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.css?t=1408017005662 HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "www.7region.com", referrer: "http://www.7region.com/demo/wp-admin/admin.php?page=w3tc_dashboard&w3tc_note=flush_all&nginx_helper_action=done&nginx_helper_urls=all&_wpnonce=xxxx"

This is on an Nginx server + WP 3.9.2 Multisite (subdir mode) + Nginx Helper created with the EasyEngine script. Please note that I’ve x-ed out the local paths and wpnonce but the XXX…XXX.css filename is there in the original messages.

Is this anything to worry about? Any way to prevent this?

Thanks for any tips 🙂

https://wordpress.org/plugins/w3-total-cache/