Errori durante avviamento Wamp Server in produzione....???

[Giovannino]

Salve,

ho degli errori che vengono visualizzati quando lancio l'url di collegamento alla applicazione in produzione.
Sono collegati a problemi di char encoding tra db sviluppo e db di produzione ?
Come si può eventualmente rimediare '?
Grazie....

Fatal error: Uncaught Error: Call to undefined function mb_convert_encoding() in C:\wamp64\www\Eos_Tat_Meter\_lib\lib\php\nm_utf8.p hp:75 Stack trace: #0 C:\wamp64\www\Eos_Tat_Meter\app_menu\app_menu.php( 389): sc_convert_encoding(',', 'ISO-8859-1', 'UTF-8') #1 C:\wamp64\www\Eos_Tat_Meter\app_menu\app_menu.php( 2433): app_menu_class->app_menu_menu() #2 {main} thrown in C:\wamp64\www\Eos_Tat_Meter\_lib\lib\php\nm_utf8.p hp on line 75

E in PHP errro log ho i seguenti

[20-Aug-2018 08:26:12 UTC] PHP Warning: chmod(): Permission denied in C:\wamp64\scripts\config.inc.php on line 121
[20-Aug-2018 08:26:12 UTC] Impossible to modify the file C:\Windows/system32/drivers/etc/hosts to be writable
[20-Aug-2018 08:26:12 UTC] The file C:\Windows/system32/drivers/etc/hosts is not writable
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/icudt60.dll' to 'c:/wamp64/bin/php/php7.2.4/icudt60.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/icuin60.dll' to 'c:/wamp64/bin/php/php7.2.4/icuin60.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/icuio60.dll' to 'c:/wamp64/bin/php/php7.2.4/icuio60.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/icutu60.dll' to 'c:/wamp64/bin/php/php7.2.4/icutu60.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/icuuc60.dll' to 'c:/wamp64/bin/php/php7.2.4/icuuc60.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/libsasl.dll' to 'c:/wamp64/bin/php/php7.2.4/libsasl.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/libpq.dll' to 'c:/wamp64/bin/php/php7.2.4/libpq.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/libssh2.dll' to 'c:/wamp64/bin/php/php7.2.4/libssh2.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/libsodium.dll' to 'c:/wamp64/bin/php/php7.2.4/libsodium.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 85
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/php7ts.dll' to 'c:/wamp64/bin/php/php7.2.4/php7ts.dll'
[20-Aug-2018 08:26:13 UTC] PHP Warning: symlink(): Cannot create symlink, error code(1314) in C:\wamp64\scripts\wampserver.lib.php on line 96
[20-Aug-2018 08:26:13 UTC] Error while creating symlink 'c:/wamp64/bin/apache/apache2.4.33/bin/php.ini' to 'c:/wamp64/bin/php/php7.2.4/phpForApache.ini'
[20-Aug-2018 08:26:17 UTC] PHP Warning: chmod(): Permission denied in C:\wamp64\scripts\config.inc.php on line 121
[20-Aug-2018 08:26:17 UTC] Impossible to modify the file C:\Windows/system32/drivers/etc/hosts to be writable
[20-Aug-2018 08:26:17 UTC] The file C:\Windows/system32/drivers/etc/hosts is not writable