XenForo Failed to open stream: No such file or directory src/XF/Http/Reader.php:444

[Mr Lucky]

Just today got a few of these. Does anyone know what the issue is please? Haven't changed the site or addons for a couple of weeks.

Code:

Stack trace
#0 [internal function]: XF::handlePhpError(2, '[E_WARNING] fop...', '/home/caf/publi...', 444)
#1 src/XF/Http/Reader.php(444): fopen('/home/caf/publi...', 'w+')
#2 src/XF/Http/Reader.php(129): XF\Http\Reader->_request(Object(GuzzleHttp\Client), 'get', 'https://www.goo...', Array, '/home/caf/publi...', Array, NULL)
#3 src/XF/Http/Reader.php(81)...

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