Fatal error: Uncaught ValueError: imagecolorallocate(): Argument #4 ($blue) must be between 0 and 255 (inclusive) in /home/grupogoi/public_html/appdata/captcha.php:10 Stack trace: #0 /home/grupogoi/public_html/appdata/captcha.php(10): imagecolorallocate(Object(GdImage), 0, 0, 400) #1 {main} thrown in /home/grupogoi/public_html/appdata/captcha.php on line 10