Fehler: Could not send order mail

Hallo liebe Community!

Ich habe heute meine erste Order mit der neuen Shopware-Version erhalten... dabei erhielt ich folgende Fehlermeldung per Email:

Message:

Could not send order mail for ordernumber 20001 to address xxx.de

Time:

2017-03-28T13:59:02.601646+0200

Channel:

core

Context:

{
    "exception": {
        "class": "Enlight_Exception",
        "message": "Syntax Error 07"  on line 33 "{/if}" unknown tag "ifclose"",
        "code": 0,
        "file": "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Components/StringCompiler.php:171",
        "trace": [
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Components/StringCompiler.php:144",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Components/TemplateMail.php:224",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Components/TemplateMail.php:185",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Core/sOrder.php:1214",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Core/sOrder.php:836",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Controllers/Frontend/Payment.php:114",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Plugins/Community/Frontend/SwagPaymentPaypal/Controllers/Frontend/PaymentPaypal.php:511",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Plugins/Community/Frontend/SwagPaymentPaypal/Controllers/Frontend/PaymentPaypal.php:311",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Library/Enlight/Controller/Action.php:159",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Library/Enlight/Controller/Dispatcher/Default.php:523",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Library/Enlight/Controller/Front.php:223",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Kernel.php:180",
            "/mnt/webs/a0/31/54229431/htdocs/vendor/symfony/http-kernel/HttpCache/HttpCache.php:487",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Components/HttpCache/AppCache.php:255",
            "/mnt/webs/a0/31/54229431/htdocs/vendor/symfony/http-kernel/HttpCache/HttpCache.php:444",
            "/mnt/webs/a0/31/54229431/htdocs/vendor/symfony/http-kernel/HttpCache/HttpCache.php:344",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Components/HttpCache/AppCache.php:178",
            "/mnt/webs/a0/31/54229431/htdocs/vendor/symfony/http-kernel/HttpCache/HttpCache.php:210",
            "/mnt/webs/a0/31/54229431/htdocs/engine/Shopware/Components/HttpCache/AppCache.php:114",
            "/mnt/webs/a0/31/54229431/htdocs/shopware.php:117"
        ]
    }
}

request:

{
    "uri": "/payment_paypal/return?token=EC-42A94771YM1514930&PayerID=xxx",
    "method": "GET",
    "query": {
        "token": "EC-42A94771YM1514930",
        "PayerID": "xxx",
        "module": "frontend",
        "controller": "payment_paypal",
        "action": "return"
    },
    "post": []
}

session:

No session data available

shopId:

1

shopName:

Hat Irgendwer eine Idee, woran das liegt??

Beste Grüße

PvP