Fatal error: Uncaught wfWAFStorageFileException: Unable to save temporary file for atomic writing. in /opt/www/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/storage/file.php:30
Stack trace:
#0 /opt/www/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/storage/file.php(650): wfWAFStorageFile::atomicFilePutContents('/opt/www/wp-con...', '<?php exit('Acc...')
#1 [internal function]: wfWAFStorageFile->saveConfig('livewaf')
#2 {main}
  thrown in /opt/www/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/storage/file.php on line 30