A PHP Error was encountered

Severity: 8192

Message: base64_decode(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: controllers/Ranking_report.php

Line Number: 236

Backtrace:

File: /home/xagio/www/dev.xagio.net/application/controllers/Ranking_report.php
Line: 236
Function: base64_decode

File: /home/xagio/www/dev.xagio.net/application/controllers/Ranking_report.php
Line: 33
Function: decrypt_url

File: /home/xagio/www/dev.xagio.net/index.php
Line: 333
Function: require_once