Ao fazer um Rest API seguro está aparecendo a mensagem: utilizo FW 7.4, PHP 8.1, MariaDB 10.3

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Deprecated: mb_detect_encoding(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/pmweb/lib/adianti/util/AdiantiStringConversion.php on line 66<br />
<pre><br />
Deprecated: mb_detect_encoding(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/pmweb/lib/adianti/util/AdiantiStringConversion.php on line 66<br />
<pre><br />
Deprecated: mb_detect_encoding(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/pmweb/lib/adianti/util/AdiantiStringConversion.php on line 66<br />
{"status":"success","data":[{"id":1,"name":"Administrator","login":"admin","email":"admin@admin.net","system_unit_id":null,"active":"Y"},{"id":2,"name":"User","login":"user","email":"user@user.net","system_unit_id":null,"active":"Y"},{"id":3,"name":"pmweb","login":"pmweb","email":"pmweb@pmweb.com.br","system_unit_id":null,"active":"Y"}]}