diff --git a/server/notification-providers/notification-provider.js b/server/notification-providers/notification-provider.js
index ee04b8ee4..5360007d1 100644
--- a/server/notification-providers/notification-provider.js
+++ b/server/notification-providers/notification-provider.js
@@ -108,16 +108,51 @@ class NotificationProvider {
      * @throws {any} The error specified
      */
     throwGeneralAxiosError(error) {
-        let msg = "Error: " + error + " ";
+        let msg = error && error.message ? error.message : String(error);
 
-        if (error.response && error.response.data) {
+        if (error && error.code) {
+            msg += ` (code=${error.code})`;
+        }
+
+        if (error && error.response && error.response.status) {
+            msg += ` (HTTP ${error.response.status}${error.response.statusText ? " " + error.response.statusText : ""})`;
+        }
+
+        if (error && error.response && error.response.data) {
             if (typeof error.response.data === "string") {
-                msg += error.response.data;
+                msg += " " + error.response.data;
             } else {
-                msg += JSON.stringify(error.response.data);
+                try {
+                    msg += " " + JSON.stringify(error.response.data);
+                } catch (e) {
+                    msg += " " + String(error.response.data);
+                }
             }
         }
 
+        // Expand AggregateError to show underlying causes
+        let agg = null;
+        if (error && error.name === "AggregateError" && Array.isArray(error.errors)) {
+            agg = error;
+        } else if (error && error.cause && error.cause.name === "AggregateError" && Array.isArray(error.cause.errors)) {
+            agg = error.cause;
+        }
+
+        if (agg) {
+            let causes = agg.errors
+                .map((e) => {
+                    let m = e && e.message ? e.message : String(e);
+                    if (e && e.code) {
+                        m += ` (code=${e.code})`;
+                    }
+                    return m;
+                })
+                .join("; ");
+            msg += " - caused by: " + causes;
+        } else if (error && error.cause && error.cause.message) {
+            msg += " - cause: " + error.cause.message;
+        }
+
         throw new Error(msg);
     }
 
diff --git a/test/backend-test/notification-providers/test-notification-provider.js b/test/backend-test/notification-providers/test-notification-provider.js
new file mode 100644
index 000000000..06ebab8e6
--- /dev/null
+++ b/test/backend-test/notification-providers/test-notification-provider.js
@@ -0,0 +1,34 @@
+const { describe, test } = require("node:test");
+const assert = require("node:assert");
+
+const NotificationProvider = require("../../../server/notification-providers/notification-provider");
+
+describe("NotificationProvider.throwGeneralAxiosError()", () => {
+    const provider = new NotificationProvider();
+
+    test("expands AggregateError causes", () => {
+        let err1 = new Error("connect ECONNREFUSED 127.0.0.1:443");
+        err1.code = "ECONNREFUSED";
+        let err2 = new Error("connect ECONNREFUSED ::1:443");
+        err2.code = "ECONNREFUSED";
+
+        let aggErr = new AggregateError([err1, err2], "AggregateError");
+
+        assert.throws(() => provider.throwGeneralAxiosError(aggErr), {
+            message: /^AggregateError - caused by: .+/,
+        });
+    });
+
+    test("expands AggregateError wrapped in error.cause", () => {
+        let innerErr = new Error("connect ETIMEDOUT 10.0.0.1:443");
+        innerErr.code = "ETIMEDOUT";
+
+        let aggErr = new AggregateError([innerErr], "AggregateError");
+        let outerErr = new Error("Request failed");
+        outerErr.cause = aggErr;
+
+        assert.throws(() => provider.throwGeneralAxiosError(outerErr), {
+            message: /^Request failed - caused by: .+/,
+        });
+    });
+});