Error asking for Pear? - Joomla! Forum - community, help and support

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i've started getting following error page of joomla website:

warning: raiseerror(pear.php): failed open stream: no such file or directory in /usr/local/psa/home/vhosts/comtec-cl.co.uk/httpdocs/includes/cache/lite.php on line 470

warning: raiseerror(): failed opening 'pear.php' inclusion (include_path='.:/usr/local/psa/apache/lib/php') in /usr/local/psa/home/vhosts/comtec-cl.co.uk/httpdocs/includes/cache/lite.php on line 470

fatal error: undefined class name 'pear' in /usr/local/psa/home/vhosts/comtec-cl.co.uk/httpdocs/includes/cache/lite.php on line 471

does know related to?  i've tried relaoding source files (v1.0.4) can't see what's wrong?

i wasn't aware joomla needed pear third party element, not have parts needs within it?

cheers
nunners






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