Php artisan sentry:test error

i using php artisan sentry:test

[Sentry] DSN discovered!
[Sentry] Generating test Event
[Sentry] Sending test Event
[Sentry] There was an error sending the test event.
[Sentry] Please check if your DSN is set properly in your config or .env as SENTRY_LARAVEL_DSN.

how can I solve this problem?