Add better error for email invites without identity server

src/i18n/strings/en_EN.json

@@ -754,6 +754,7 @@
     "The user must be unbanned before they can be invited.": "The user must be unbanned before they can be invited.",
     "The user's homeserver does not support the version of the space.": "The user's homeserver does not support the version of the space.",
     "The user's homeserver does not support the version of the room.": "The user's homeserver does not support the version of the room.",
+    "Cannot invite user by email without an identity server, connect to one in settings": "Cannot invite user by email without an identity server, connect to one in settings",
     "Unknown server error": "Unknown server error",
     "Use a few words, avoid common phrases": "Use a few words, avoid common phrases",
     "No need for symbols, digits, or uppercase letters": "No need for symbols, digits, or uppercase letters",

src/utils/MultiInviter.ts

@@ -277,6 +277,12 @@ export default class MultiInviter {
                                 errorText = _t("The user's homeserver does not support the version of the room.");
                             }
                             break;
+                        case "ORG.MATRIX.JSSDK_MISSING_PARAM":
+                            if (getAddressType(address) === AddressType.Email) {
+                                errorText = _t(
+                                    "Cannot invite user by email without an identity server, connect to one in settings",
+                                );
+                            }
                     }
 
                     if (!errorText) {