Open your xampp folder, open php folder and edit in text editor file php.ini
Find line with:
error_reporting =
and replace this line (text after = too) with:
error_reporting = E_ALL & ~E_NOTICE & ~E_DEPRECATED
make sure that ; is not a first letter in this line!
Open XAMPP Control and restart Apache or if you don't know how just restart PC
EDIT:
If it helped please post about it or press 'Likes', because I did not test this code. I just copied code from my working version of xampp (old).
; error_reporting
; Default Value: E_ALL & ~E_NOTICE
; Development Value: E_ALL | E_STRICT
; Production Value: E_ALL & ~E_DEPRECATED
Notice: Undefined index: page in C:\xampp\htdocs\install.php on line 40
Notice: Undefined index: page in C:\xampp\htdocs\install.php on line 52
Notice: Undefined index: page in C:\xampp\htdocs\install.php on line 63
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\latestnews.php on line 158
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\latestnews.php on line 298
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 416
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 416
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 416
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 416
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 401
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 401
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 401
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\pot\OTS_Account.php on line 401
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\accountmanagement.php on line 53
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\xampp\htdocs\accountmanagement.php on line 53
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 1 no such column: flag' in D:\xampp\htdocs\pot\OTS_Account.php:831 Stack trace: #0 D:\xampp\htdocs\pot\OTS_Account.php(831): PDO->query('UPDATE "account...') #1 D:\xampp\htdocs\createaccount.php(270): OTS_Account->setCustomField('flag', 'af') #2 D:\xampp\htdocs\index.php(129): include('D:\xampp\htdocs...') #3 {main} thrown in D:\xampp\htdocs\pot\OTS_Account.php on line 831
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 1 no such table: z_forum' in D:\xampp\htdocs\latestnews.php:274 Stack trace: #0 D:\xampp\htdocs\latestnews.php(274): PDO->query('SELECT `z_forum...') #1 D:\xampp\htdocs\index.php(63): include('D:\xampp\htdocs...') #2 {main} thrown in D:\xampp\htdocs\latestnews.php on line 274