4.9.1 Newsletter eintragen nicht möglich (Fehler)

Hallo zusammen,
ich habe versucht mich als Abonnent mit der Mail Adresse ein zu tragen. Leider gibt es da eine Fehlermeldung. Muss ich evtl. noch Erweiterungen installieren?

Code:

---

        "bugbuster/contao-visitors-bundle": "^1.6",
        "contao/calendar-bundle": "4.9.*",
        "contao/comments-bundle": "4.9.*",
        "contao/conflicts": "*@dev",
        "contao/faq-bundle": "4.9.*",
        "contao/listing-bundle": "4.9.*",
        "contao/manager-bundle": "4.9.*",
        "contao/news-bundle": "4.9.*",
        "contao/newsletter-bundle": "4.9.*",
        "do-while/contao-backupdb-bundle": "^1.4",
        "lionel/newsletter-export": "^4.0",
        "madeyourday/contao-rocksolid-antispam": "^2.0",
        "menatwork/contao-multicolumnwizard-bundle": "^3.4"

---

Code:

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[2020-04-22 22:58:46] request.CRITICAL: Uncaught PHP Exception Swift_TransportException: "Expected response code 220 but got an empty response" at /is/htdocs/wp12479079_B9QFR0AYKT///vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php line 445 {"exception":"[object] (Swift_TransportException(code: 0): Expected response code 220 but got an empty response at /is/htdocs/wp12479079_B9QFR0AYKT///vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php:445)"} []
[2020-04-22 22:59:01] request.INFO: Matched route "contao_backend". {"route":"contao_backend","route_parameters":{"_route":"contao_backend","_scope":"backend","_token_check":true,"_controller":"Contao\\CoreBundle\\Controller\\BackendController::mainAction"},"request_uri":"http://.pep-oldenburg.de/contao?do=newsletter&id=1&key=send&mpc=10&preview=&recipient=info%40pep-oldenburg.de&start=0&table=tl_newsletter&timeout=1&token=50337804abdf87cbfa163f8d8d081664","method":"GET"} []
[2020-04-22 22:59:01] request.CRITICAL: Uncaught PHP Exception Swift_TransportException: "Expected response code 220 but got an empty response" at /is/htdocs/wp12479079_B9QFR0AYKT///vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php line 445 {"exception":"[object] (Swift_TransportException(code: 0): Expected response code 220 but got an empty response at /is/htdocs/wp12479079_B9QFR0AYKT///vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php:445)"} []
[2020-04-22 23:01:25] request.INFO: Matched route "tl_page.28.error_404". {"route":"tl_page.28.error_404","route_parameters":{"_token_check":true,"_controller":"Contao\\FrontendIndex::renderPage","_scope":"frontend","_locale":"de","pageModel":"[object] (Contao\\PageModel: {})","_url_fragment":"contao-manager/users.json","_route":"tl_page.28.error_404"},"request_uri":"http://pep-oldenburg.de/contao-manager/users.json","method":"GET"} []
[2020-04-22 23:01:25] security.INFO: Populated the TokenStorage with an anonymous Token. [] []
[2020-04-22 23:01:25] request.CRITICAL: Uncaught PHP Exception Exception: "Could not find template "mod_article_fullwidth"" at /is/htdocs/wp12479079_B9QFR0AYKT///vendor/contao/core-bundle/src/Resources/contao/library/Contao/TemplateLoader.php line 158 {"exception":"[object] (Exception(code: 0): Could not find template \"mod_article_fullwidth\" at /is/htdocs/wp12479079_B9QFR0AYKT///vendor/contao/core-bundle/src/Resources/contao/library/Contao/TemplateLoader.php:158)"} []

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Es ist ein angepasstes Theme. Kann mir jemand sagen was da evtl. faul ist?

Steht doch eh in der Fehlermeldung?

Code:

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Could not find template "mod_article_fullwidth"

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