Release number is int, not string about magento2-sentry HOT 3 CLOSED

1 exception(s):
Exception #0 (Symfony\Component\OptionsResolver\Exception\InvalidOptionsException): The option "release" with value 1581905462 is expected to be of type "null" or "string", but is of type "integer".

Exception #0 (Symfony\Component\OptionsResolver\Exception\InvalidOptionsException): The option "release" with value 1581905462 is expected to be of type "null" or "string", but is of type "integer".
<pre>#1 Symfony\Component\OptionsResolver\OptionsResolver->resolve() called at [vendor/sentry/sentry/src/Options.php:74]
#2 Sentry\Options->__construct() called at [vendor/sentry/sentry/src/ClientBuilder.php:109]
#3 Sentry\ClientBuilder::create() called at [vendor/sentry/sentry/src/functions.php:14]
#4 Sentry\init() called at [vendor/justbetter/magento2-sentry/Model/SentryInteraction.php:16]
#5 JustBetter\Sentry\Model\SentryInteraction->initialize() called at [vendor/justbetter/magento2-sentry/Plugin/GlobalExceptionCatcher.php:55]
#6 JustBetter\Sentry\Plugin\GlobalExceptionCatcher->aroundLaunch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#7 Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#8 Magento\Framework\App\Http\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/Http/Interceptor.php:26]
#9 Magento\Framework\App\Http\Interceptor->launch() called at [vendor/magento/framework/App/Bootstrap.php:257]
#10 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:45]
</pre>

protected function readValue($appMode) {
...
return (string)$result;
}