fix: calling of ErrFetch and ErrDelete, ErrFetch and ErrPost definition

[weilirs]

Notes for Reviewers

• This issue has been stale for 3 weeks
• I fixed some callings of ErrFetch and ErrDelete to avoid binary in the log.
• I added Probable Causes and Suggested Remediations to ErrFetch and ErrPosts' definitions.
• The Log2) in the issue seems to have complete Probable Causes and Suggested Remediations.
• This PR fixes [Server] Improve Error Code and replace/remove illegible output #12438

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• Yes, I signed my commits.

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END-TO-END TESTS

• Testing started at: November 9th 2024, 1:35:20 am

📦 Test Result Summary

• ✅ 15 passed
• ❌ 7 failed
• ⚠️ 12 flaked
• ⏩ 0 skipped

⌛ Duration: 4 minutes and 34 seconds

Overall Result: 👎 Some tests failed.

[Show/Hide] Test Result Details

Test	Browser	Test Case	Tags	Result
1	chromium	Add a cluster connection by uploading kubeconfig file	unstable	⚠️
2	chromium	Transition to disconnected state and then back to connected state	unstable	⚠️
3	chromium	Transition to ignored state and then back to connected state	unstable	⚠️
4	chromium	Transition to not found state and then back to connected state	unstable	⚠️
5	chromium	Delete Kubernetes cluster connections	unstable	⚠️
6	chromium	Toggle "Send Anonymous Usage Statistics"	unstable	⚠️
7	chromium	Toggle "Send Anonymous Performance Results"	unstable	⚠️
8	firefox	Verify that UI components are displayed		❌
9	firefox	Add a cluster connection by uploading kubeconfig file	unstable	⚠️
10	firefox	Transition to disconnected state and then back to connected state	unstable	⚠️
11	firefox	Transition to ignored state and then back to connected state	unstable	⚠️
12	firefox	Transition to not found state and then back to connected state	unstable	⚠️
13	firefox	Delete Kubernetes cluster connections	unstable	⚠️
14	firefox	Aggregation Charts are displayed		❌
15	firefox	Test if Left Navigation Panel is displayed		❌
16	firefox	Test if Settings button is displayed		❌
17	firefox	Test if Notification button is displayed		❌
18	firefox	Test if Profile button is displayed		❌
19	firefox	Configure Existing Istio adapter through Mesh Adapter URL from Management page	unstable	⚠️
20	firefox	Ping Istio Adapter	unstable	⚠️
21	firefox	Add performance profile with load generator "fortio" and service mesh "None"	unstable	⚠️
22	firefox	View detailed result of a performance profile (Graph Visualiser) with load generator "fortio" and service mesh "None"	unstable	⚠️
23	firefox	Edit the configuration of a performance profile with load generator "fortio" and service mesh "None"	unstable	⚠️
24	firefox	Compare test of a performance profile with load generator "fortio" and service mesh "None"	unstable	⚠️
25	firefox	Delete a performance profile with load generator "fortio" and service mesh "None"	unstable	⚠️
26	firefox	Connect to Meshery Istio Adapter and configure it		❌
27	firefox	Toggle "Send Anonymous Usage Statistics"	unstable	⚠️
28	firefox	Toggle "Send Anonymous Performance Results"	unstable	⚠️

[leecalcote]

@Divyansh200102 do you mind offering review on this PR?

[vishalvivekm]

@weilirs
Let's discuss this during the Meshery Development call today at 9:00 AM CT | 8:30 PM IST. Adding it as an agenda item to the meeting minutes || meeting link.

[weilirs]

@weilirs Let's discuss this during the Meshery Development call today at 9:00 AM CT | 8:30 PM IST. Adding it as an agenda item to the meeting minutes || meeting link.

Sorry I missed this message and didn't join. But I believe the modifications I made are stated in the "Notes for Reviewers".