A PHP Error was encountered

Severity: 8192

Message: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated

Filename: helpers/my_audit_helper.php

Line Number: 8900

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 8900
Function: str_replace

File: /var/www/html/application/controllers/Author.php
Line: 786
Function: formatAIDetailSummary

File: /var/www/html/application/controllers/Author.php
Line: 685
Function: pubMedSearchtoAuthorResults_array

File: /var/www/html/application/controllers/Author.php
Line: 122
Function: pubMedAuthorSearch_array

File: /var/www/html/index.php
Line: 316
Function: require_once