A PHP Error was encountered

Severity: 8192

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

Filename: models/Wordmodel.php

Line Number: 28

Backtrace:

File: /home/useradm/web/wikislovo.ru/public_html/application/models/Wordmodel.php
Line: 28
Function: trim

File: /home/useradm/web/wikislovo.ru/public_html/application/controllers/Main.php
Line: 176
Function: get_phonetic_linked_words

File: /home/useradm/web/wikislovo.ru/public_html/index.php
Line: 315
Function: require_once