Catchable fatal error: Object of class WP_Error could not be converted to string in /var/www/vhosts/powerstax.com/httpdocs/wp-includes/default-constants.php on line 147

Fatal error: Uncaught wfWAFStorageFileException: Unable to verify temporary file contents for atomic writing. in /var/www/vhosts/powerstax.com/httpdocs/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/storage/file.php:47 Stack trace: #0 /var/www/vhosts/powerstax.com/httpdocs/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/storage/file.php(650): wfWAFStorageFile::atomicFilePutContents('/var/www/vhosts...', '<?php exit('Acc...') #1 [internal function]: wfWAFStorageFile->saveConfig('livewaf') #2 {main} thrown in /var/www/vhosts/powerstax.com/httpdocs/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/storage/file.php on line 47