When replying or creating a thread with containing link 'http://custom-build-robots.com' we got error:
Class 'Normalizer' not found on line 681 in /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/Patchwork/PHP/Shim/Iconv.php
#0 /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/Patchwork/PHP/Shim/Iconv.php(207): Patchwork\PHP\Shim\Iconv::mapFromUtf8('', Array, '\xC3\xBC', '//IGNORE', '//TRANSLIT')
#1 /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/Patchwork/Utf8/Bootup/iconv.php(21): Patchwork\PHP\Shim\Iconv::iconv('utf-8', 'us-ascii', '\xC3\xBC')
#2 /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/voku/helper/UTF8.php(455): iconv('UTF-8', 'ASCII//IGNORE//...', '\xC3\xBC')
#3 /home/xxx/public_html/dbtech/dbseo/includes/class_core.php(4026): voku\helper\UTF8::to_ascii(Array)
#4 /home/xxx/public_html/dbtech/dbseo/hooks/postdata_presave.php(62): DBSEO::linkExternalTitles('testing here [u...', false)
#5 /home/xxx/public_html/includes/class_dm_threadpost.php(770) : eval()'d code(1): require('/home/xxx/publ...')
#6 /home/xxx/public_html/includes/class_dm_threadpost.php(770): eval()
#7 /home/xxx/public_html/includes/functions_newpost.php(618): vB_DataManager_Post->pre_save()
#8 /home/xxx/public_html/newreply.php(451): build_new_post('reply', Array, Array, Array, Array, Array)
#9 /home/xxx/public_html/dbseo.php(498): require('/home/xxx/publ...')
#10 {main}
Class 'Normalizer' not found on line 681 in /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/Patchwork/PHP/Shim/Iconv.php
#0 /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/Patchwork/PHP/Shim/Iconv.php(207): Patchwork\PHP\Shim\Iconv::mapFromUtf8('', Array, '\xC3\xBC', '//IGNORE', '//TRANSLIT')
#1 /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/Patchwork/Utf8/Bootup/iconv.php(21): Patchwork\PHP\Shim\Iconv::iconv('utf-8', 'us-ascii', '\xC3\xBC')
#2 /home/xxx/public_html/dbtech/dbseo/includes/3rdparty/portable-utf8/voku/helper/UTF8.php(455): iconv('UTF-8', 'ASCII//IGNORE//...', '\xC3\xBC')
#3 /home/xxx/public_html/dbtech/dbseo/includes/class_core.php(4026): voku\helper\UTF8::to_ascii(Array)
#4 /home/xxx/public_html/dbtech/dbseo/hooks/postdata_presave.php(62): DBSEO::linkExternalTitles('testing here [u...', false)
#5 /home/xxx/public_html/includes/class_dm_threadpost.php(770) : eval()'d code(1): require('/home/xxx/publ...')
#6 /home/xxx/public_html/includes/class_dm_threadpost.php(770): eval()
#7 /home/xxx/public_html/includes/functions_newpost.php(618): vB_DataManager_Post->pre_save()
#8 /home/xxx/public_html/newreply.php(451): build_new_post('reply', Array, Array, Array, Array, Array)
#9 /home/xxx/public_html/dbseo.php(498): require('/home/xxx/publ...')
#10 {main}