How to resolve the error” failed to load resource: the server responded with a status of 404 (Not Found)” - Unable to work on any reports?
There was no issue while working fine in Trailhead playground but suddenly I’m getting the below error while working on Reports. Neither able to create any Report using New Report under Reports Tab nor edit any existing report. I was working on the super badge and all of sudden getting this error. Tried other TPs but same error. Not sure how to proceed further. Any help is appreciated.Failed to load resource: the server responded with a status of 404 (Not Found) Object report.lightningReport app.chunk.82c3359a56564251e989.js:1
The only way to fix this is to make sure that the CSS and JS files are properly linked within the HTML. Check whether the folder, file, and directory names of these files are spelled correctly. Another way to fix this is by using an absolute URL instead of a relative URL.
Answer (1)
The error message "Failed to load resource: the server responded with a status of 404 (Not Found)" indicates that the requested resource could not be found on the server. This issue can occur for various reasons, especially when trying to work with reports in a web application or platform. Here are steps to troubleshoot and resolve this error:
1. Check the URL
Correct URL: Ensure that the URL for the resource (report, file, etc.) is correct and does not contain any typos.
Resource Path: Verify that the path to the resource is accurate and points to the correct location on the server.
2. Verify Resource Availability
Existence: Confirm that the resource you are trying to access actually exists on the server. You can do this by navigating to the URL directly in a browser.
Deployment: If you recently deployed or moved resources, ensure that all necessary files were included and correctly placed in the target location.
3. Check Server Configuration
Server Routes: Ensure that the server is configured to serve the requested resource. This includes setting up the correct routes and permissions.
Server Logs: Examine the server logs for any errors or issues related to resource requests. This can provide insight into why the resource is not being found.
4. Clear Browser Cache
Cache Issues: Sometimes, the browser cache can cause issues by serving outdated versions of resources. Clear your browser cache and try accessing the resource again.
Clearing Cache: In most browsers, you can do this by pressing Ctrl+Shift+Del (Windows) or Cmd+Shift+Del (Mac) and selecting the appropriate options to clear cached images and files.
5. Check Application Code
Correct References: Ensure that all references to the resource in your application code are correct. This includes URLs in HTML, JavaScript, CSS, etc.
Dynamic Paths: If your application generates resource paths dynamically, verify that the code generating these paths is functioning correctly.
6. Review Permissions
Access Rights: Ensure that the resource has the correct permissions set to be accessible by the users or the application trying to load it.
Server Permissions: Check the server’s file system permissions to ensure that the web server has read access to the resource.
7. Network Issues
Proxy and Firewall: Ensure that there are no proxy or firewall rules blocking access to the resource.
Network Connectivity: Verify that there are no network issues preventing access to the server or the specific resource.
8. Debugging Tools
Browser Developer Tools: Use the developer tools in your browser (usually accessible by pressing F12) to inspect network requests and see more details about the 404 error.
Network Tab: Look at the Network tab to see which resource is failing to load and why.
Example Scenario
If you are unable to work on any reports due to this error, here's a specific approach to troubleshoot:
Identify the Missing Resource:
Open your browser's developer tools.
Go to the Network tab and refresh the page.
Look for any resource requests that return a 404 status.
Check the Report Path:
Ensure that the URL path for the report is correct.
Manually navigate to the report URL to see if it is accessible.
Verify Report Deployment:
Confirm that the report files are correctly deployed to the server.
Check if there are any recent changes or deployments that might have moved or deleted the report files.
Server Configuration:
Check the server configuration to ensure it is set up to serve the report files.
Look for any configuration changes that might have affected the resource paths.
Permissions:
Ensure that the report files have the correct permissions to be accessed by the server and users.
By following these steps, you should be able to identify and resolve the 404 error, allowing you to work on your reports without issues. If the problem persists, consider reaching out to your web server or application support team for further assistance.