Problem, with the migration to other hosting

when, i tried, to run the application on local, appear the following error on the debug console:

Strict Standards: Non-static method EasyContactFormsApplicationSettings::getInstance() should not be called statically in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms.php on line 53

Strict Standards: Non-static method EasyContactFormsDB::getTableName() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-baseclass.php on line 324

Strict Standards: Non-static method EasyContactFormsDB::select() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-baseclass.php on line 145

Strict Standards: Non-static method EasyContactFormsDB::getWhere() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 136

Deprecated: mysql_real_escape_string(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 152

Warning: mysql_real_escape_string(): Access denied for user 'www-data'@'localhost' (using password: NO) in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 152

Warning: mysql_real_escape_string(): A link to the server could not be established in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 152

Strict Standards: Non-static method EasyContactFormsDB::wptn() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 163

Strict Standards: Non-static method EasyContactFormsDB::getObjects() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 165

Strict Standards: Non-static method EasyContactFormsDB::wptn() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 75

Strict Standards: Non-static method EasyContactFormsDB::getTableName() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-baseclass.php on line 324

Strict Standards: Non-static method EasyContactFormsDB::getValue() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-baseclass.php on line 704

Strict Standards: Non-static method EasyContactFormsDB::wptn() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 95

Strict Standards: Non-static method EasyContactFormsDB::getTableName() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-baseclass.php on line 324

Strict Standards: Non-static method EasyContactFormsDB::getValue() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-baseclass.php on line 704

Strict Standards: Non-static method EasyContactFormsDB::wptn() should not be called statically, assuming $this from incompatible context in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/plugins/easy-contact-forms/easy-contact-forms-database.php on line 95

Strict Standards: Declaration of icore_menudesc::start_el() should be compatible with Walker_Nav_Menu::start_el(&$output, $item, $depth = 0, $args = Array, $id = 0) in /var/www/html/Digital_Dream_Migrate/datasuministros/wp-content/themes/bonanza/includes/icore/theme-functions.php on line 91

i appreciate some help, thanks

https://www.ads-software.com/plugins/easy-contact-form-solution/