图片验证码生成失败

$captcha = new CaptchaBuilder("5+8 = ?");
$code = $captcha->getPhrase();\Cache::put($key, ['phone' => $phone, 'code' => $captcha->getPhrase()], $expiredAt);$captcha->build();
$result = ['captcha_key' => $key,'expired_at' => $expiredAt->toDateTimeString(),'captcha_image_content' => $captcha->inline()
];

$builder = new CaptchaBuilder(‘12345’)", 其中的 12345 (phrase) 必须为 string
但是这样再使用 $builder->inline() 会报错, 无法生成验证码图片,如上代码即可显示

图片验证码个别符号乱码

if ($font === null) {$rand = $this->rand(0, 5);if($rand == 2){$rand = 3;}$font = __DIR__ . '/Font/captcha'.$rand.'.ttf';// $font = __DIR__ . '/Font/captcha2.ttf';}