Wie immer ist es schwer dass so zu diagnostizieren.
Die Fehlermeldung sagt zumindest mir nix deutliches.
Du solltest im Networktab einen Aufruf zu “getForm” sehen, dieser liefert den Inhalt des Formulars - siehst du da unter Response eine gültige Antwort ähnlich dieser hier:
{
"success": true,
"data": {
"id": 192,
"parentId": 80,
"name": "Frontend60",
"label": "E-Mail-Einstellungen",
"description": null,
"pluginId": null,
"position": 10,
"elements": [{
"id": 624,
"name": "no_order_mail",
"value": false,
"description": null,
"label": "Bestellbest\u00e4tigung an Shopbetreiber deaktivieren",
"type": "boolean",
"required": false,
"position": 0,
"scope": 0,
"options": null,
"translations": [],
"values": []
}, {
"id": 633,
"name": "send_confirm_mail",
"value": true,
"description": null,
"label": "Registrierungsbest\u00e4tigung in CC an Shopbetreiber schicken",
"type": "boolean",
"required": false,
"position": 0,
"scope": 0,
"options": null,
"translations": [],
"values": []
}, {
"id": 634,
"name": "optinnewsletter",
"value": false,
"description": null,
"label": "Double-Opt-In f\u00fcr Newsletter-Anmeldungen",
"type": "boolean",
"required": false,
"position": 0,
"scope": 0,
"options": null,
"translations": [],
"values": []
}, {
"id": 635,
"name": "optinvote",
"value": true,
"description": null,
"label": "Double-Opt-In f\u00fcr Artikel-Bewertungen",
"type": "boolean",
"required": false,
"position": 0,
"scope": 0,
"options": null,
"translations": [],
"values": []
}, {
"id": 641,
"name": "orderstatemailack",
"value": "",
"description": null,
"label": "Bestellstatus - \u00c4nderungen CC-Adresse",
"type": "text",
"required": false,
"position": 0,
"scope": 0,
"options": null,
"translations": [],
"values": []
}, {
"id": 994,
"name": "emailheaderplain",
"value": "",
"description": null,
"label": "E-Mail Header Plaintext",
"type": "textarea",
"required": false,
"position": 0,
"scope": 1,
"options": null,
"translations": [],
"values": []
}, {
"id": 995,
"name": "emailfooterplain",
"value": "\nMit freundlichen Gr\u00fc\u00dfen,\n\nIhr Team von {config name=shopName}",
"description": null,
"label": "E-Mail Footer Plaintext",
"type": "textarea",
"required": false,
"position": 0,
"scope": 1,
"options": null,
"translations": [],
"values": []
}, {
"id": 996,
"name": "emailheaderhtml",
"value": "\n",
"description": null,
"label": "E-Mail Header HTML",
"type": "textarea",
"required": false,
"position": 0,
"scope": 1,
"options": null,
"translations": [],
"values": []
}, {
"id": 997,
"name": "emailfooterhtml",
"value": "\nMit freundlichen Gr\u00fc\u00dfen,\n\nIhr Team von {config name=shopName}",
"description": null,
"label": "E-Mail Footer HTML",
"type": "textarea",
"required": false,
"position": 0,
"scope": 1,
"options": null,
"translations": [],
"values": []
}],
"translations": []
},
"total": 9
}
Wenn die Antwort kommt dann wird es wohl ein Javascript sein (eventuell der Fehler den du siehst) welches einen Fehler verursacht. Ich denke aber fast die Antwort könnte bei dir schon falsch aussehen. Was kriegst du denn von getForm zurück?
Thomas