I’m using Newrelic app to catch any error in server. So here is the latest error that I’ve found. It doesnt affect anything but just in case I want to ask.

E_ERROR: Unknown: Cannot use output buffering in output buffering display handlers
System Info:

Ubuntu 14.04
Apache/2.4.7

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This question was answered by @JonsJava:

You’re using W3 total cache, aren’t you? clear your minify cache, and this should go away.

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