¿Cómo mejoro las urls?

( ! ) Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array\|string is deprecated in /var/www/mybb-es.com/inc/plugins/google_seo/redirect.php on line 298
Call Stack
#	Time	Memory	Function	Location
1	0.0001	378488	{main}( )	.../showthread.php:0
2	0.0002	403416	require_once( '/var/www/mybb-es.com/global.php )	.../showthread.php:28
3	0.0068	1723768	pluginSystem->run_hooks( $hook = 'global_start', $arguments = ??? )	.../global.php:100
4	0.0068	1723800	google_seo_redirect_hook( '' )	.../class_plugins.php:142
5	0.0077	1724520	preg_replace( $pattern = '/\\?([^&?=]+)([=&])/u', $replacement = '&$1$2', $subject = NULL )	.../redirect.php:298

( ! ) Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /var/www/mybb-es.com/inc/plugins/google_seo/redirect.php on line 298

Call Stack

Time

Memory

Function

Location

0.0001

378488

{main}( )

.../showthread.php:0

0.0002

403416

require_once( '/var/www/mybb-es.com/global.php )

.../showthread.php:28

0.0068

1723768

pluginSystem->run_hooks( $hook = 'global_start', $arguments = ??? )

.../global.php:100

0.0068

1723800

google_seo_redirect_hook( '' )

.../class_plugins.php:142

0.0077

1724520

preg_replace( $pattern = '/\\?([^&?=]+)([=&])/u', $replacement = '&$1$2', $subject = NULL )

.../redirect.php:298

( ! ) Deprecated: parse_str(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/mybb-es.com/inc/plugins/google_seo/redirect.php on line 315
Call Stack
#	Time	Memory	Function	Location
1	0.0001	378488	{main}( )	.../showthread.php:0
2	0.0002	403416	require_once( '/var/www/mybb-es.com/global.php )	.../showthread.php:28
3	0.0068	1723768	pluginSystem->run_hooks( $hook = 'global_start', $arguments = ??? )	.../global.php:100
4	0.0068	1723800	google_seo_redirect_hook( '' )	.../class_plugins.php:142
5	0.0080	1725400	parse_str( $string = NULL, $result = NULL )	.../redirect.php:315

( ! ) Deprecated: parse_str(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/mybb-es.com/inc/plugins/google_seo/redirect.php on line 315

Call Stack

Time

Memory

Function

Location

0.0001

378488

{main}( )

.../showthread.php:0

0.0002

403416

require_once( '/var/www/mybb-es.com/global.php )

.../showthread.php:28

0.0068

1723768

pluginSystem->run_hooks( $hook = 'global_start', $arguments = ??? )

.../global.php:100

0.0068

1723800

google_seo_redirect_hook( '' )

.../class_plugins.php:142

0.0080

1725400

parse_str( $string = NULL, $result = NULL )

.../redirect.php:315

Hola, tengo un inconveniente,me gustaría que en vez de:

http://misitio.com/thread-2.html

Saliera: http://misitio.com/titulo-del-mensaje-2.html

Ya probé con Servidor y opciones de optimización y no hubo cambios, igualmente instalé SEO Google y sin cambio alguno, todo sigue estando igual ¿qué solución le puedo dar?

Gracias