Fix "Cannot read ... of undefined" from Axios response (#4541)

# What this PR does
Fix "Cannot read ... of undefined" from Axios response



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## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

grafana-plugin/src/utils/faro.ts

@@ -105,19 +105,19 @@ class BaseFaroHelper {
     this.faro?.api.pushEvent(name, {
       url: res?.config?.url,
       status: `${res?.status}`,
-      statusText: `${res.statusText}`,
-      method: res.config?.method.toUpperCase(),
+      statusText: `${res?.statusText}`,
+      method: res?.config?.method.toUpperCase(),
     });
   };
 
-  pushAxiosNetworkError = (res: AxiosResponse) => {
-    this.faro?.api.pushError(new Error(`Network error: ${res.status}`), {
+  pushAxiosNetworkError = (res?: AxiosResponse) => {
+    this.faro?.api.pushError(new Error(`Network error: ${res?.status}`), {
       context: {
-        url: res.config?.url,
+        url: res?.config?.url,
         type: 'network',
         data: `${safeJSONStringify(res.data)}`,
-        status: `${res.status}`,
-        statusText: `${res.statusText}`,
+        status: `${res?.status}`,
+        statusText: `${res?.statusText}`,
         timestamp: new Date().toUTCString(),
       },
     });