I do the optimization and get a no-code error

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This reply was modified 4 years, 3 months ago by save1962.
I upgraded to PHP version 5.6.9, but still keeps the error.
I have 6 websites on the same server, all with the same versions of wordpress and php, I have this problem in 2.
PHP Version 3.5.29
Wordpress Version 4.2.4