PHP sentry/sentry does not handle spans

[Lachee]

It seems that using the Sentry SDK for PHP causes spans to be ignored.
time=2026-06-13T13:40:25.527+10:00 level=WARN msg="sentry: failed to store structured transaction" err="insert sentry_transactions: constraint failed: UNIQUE constraint failed: sentry_transactions.event_id (2067)"

This seems to be because the envelope doesn't contain an event_id.

Host: 10.0.10.161:8000
User-Agent: sentry.php/4.27.0
Accept: */*
Accept-Encoding: deflate, gzip, br, zstd
Proxy-Connection: Keep-Alive
Content-Type: application/x-sentry-envelope
X-Sentry-Auth: Sentry sentry_version=7, sentry_client=sentry.php/4.27.0, sentry_key=sentry
Content-Encoding: gzip
Content-Length: 19977

{"sent_at":"2026-06-13T03:44:42Z","dsn":"http:\/\/sentry@10.0.10.161:8000\/1","sdk":{"name":"sentry.php","version":"4.27.0","packages":[{"name":"composer:sentry\/sentry","version":"4.27.0"}]},"trace":{"trace_id":"922d838166144bef80687ee18a0ca47a","sample_rate":"1","transaction":"\/dashboard\/test","public_key":"sentry","environment":"dev","sampled":"true","sample_rand":"0.972972"}}
{"type":"log","item_count":5,"content_type":"application\/vnd.sentry.items.log+json"}
{"items":[{"timestamp":1781322282.616196,"trace_id":"922d838166144bef80687ee18a0ca47a","level":"info","body":"SELECT `b`.* FROM `auth_assignment` `a`, `auth_item` `b` WHERE (`a`.`item_name`=`b`.`name`) AND (`a`.`user_id`='3') AND (`b`.`type`=1)","attributes":{"sentry.release":{"type":"string","value":"null"},"sentry.environment":{"type":"string","value":"dev"},"server.address":{"type":"string","value":"d78b669f473f"},"sentry.trace.parent_span_id":{"type":"string","value":"acef3420355343a1"},"sentry.sdk.name":{"type":"string","value":"sentry.php"},"sentry.sdk.version":{"type":"string","value":"4.27.0"},"user.id":{"type":"integer","value":3},"user.email":{"type":"string","value":"my@email.com"},"category":{"type":"string","value":"yii\\db\\Command::query"}}},{"timestamp":1781322282.616749,"trace_id":"922d838166144bef80687ee18a0ca47a","level":"info","body":"SELECT `b`.* FROM `auth_assignment` `a`, `auth_item` `b` WHERE (`a`.`item_name`=`b`.`name`) AND (`a`.`user_id`='3') AND (`b`.`type`=2)","attributes":{"sentry.release":{"type":"string","value":"null"},"sentry.environment":{"type":"string","value":"dev"},"server.address":{"type":"string","value":"d78b669f473f"},"sentry.trace.parent_span_id":{"type":"string","value":"acef3420355343a1"},"sentry.sdk.name":{"type":"string","value":"sentry.php"},"sentry.sdk.version":{"type":"string","value":"4.27.0"},"user.id":{"type":"integer","value":3},"user.email":{"type":"string","value":"my@email.com"},"category":{"type":"string","value":"yii\\db\\Command::query"}}}, 
... etc ...

My Sentry configuration is as such:

\Sentry\init([
            'dsn' => $this->backendDSN,
            'logger' => YII_DEBUG ? new \Sentry\Logger\DebugFileLogger(filePath: Yii::getAlias('@app/_tmp/sentry.log')) : null,
            'environment' => $this->environment,
            'traces_sampler' => fn($ctx) => $this->tracesSampler($ctx),
            'profiles_sample_rate' => $this->profileSampleRate,
            'enable_logs' => true,
            'before_send_log' => fn($log) => $this->beforeSendLog($log),
            'before_send' => fn($evt) => $this->beforeSendEvent($evt),
            'http_proxy' => 'http://10.0.10.161:9090'
        ]);

With a lot of shenanigans with Transactions for Yii2 (we have each DB and Action automatically create new spans in the transaction).