XF 2.2 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.

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): XF\Http\Reader->requestUntrusted('get', 'https://www.goo...', Array, '/home/caf/publi...', Array, NULL)
#4 src/addons/DigitalPoint/Analytics/Repository/JavaScript.php(46): XF\Http\Reader->getUntrusted('https://www.goo...', Array, '/home/caf/publi...', Array, NULL)
#5 src/addons/DigitalPoint/Analytics/Cron/CleanUp.php(24): DigitalPoint\Analytics\Repository\JavaScript->getFile('gtm', true)
#6 src/XF/Job/Cron.php(37): DigitalPoint\Analytics\Cron\CleanUp::runHourlyCleanUp(Object(XF\Entity\CronEntry))
#7 src/XF/Job/Manager.php(260): XF\Job\Cron->run(8)
#8 src/XF/Job/Manager.php(202): XF\Job\Manager->runJobInternal(Array, 8)
#9 src/XF/Job/Manager.php(86): XF\Job\Manager->runJobEntry(Array, 8)
#10 job.php(43): XF\Job\Manager->runQueue(false, 8)
#11 {main}
Request state
array(4) {
  ["url"] => string(8) "/job.php"
  ["referrer"] => string(50) "https://cafesaxophone.com/whats-new/posts/2225206/"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}