what is 301 error?How to solve 301 error?

[access1solution]

what is 301 error? How to solve 301 error?

[nancy07]

A status code of 301 tells a client that the resource they asked for has permanently moved to a new location. The response should also include this location. It tells the client to use the new URL the next time it wants to fetch the same resource.

[jeffronald19]

The HTTP response status code 301 Moved Permanently is used for permanent URL redirection, meaning current links or records using the URL that the response is received for should be updated. The new URL should be provided in the Location field included with the response.
If you have a webpage/url which is not exist in your site then its important to redirect that url to the relevant or similar url/webpage so that user can drive to that page.

[ananyasharma]

You should use a 301 redirect if a web page you remove has a suitable alternative page on your web site. If there is no suitable page (“suitable” here means a page with very similar content), then 404 the page. And remember to customize your 404 page to help people find useful links and information there so they stay in your sales funnel, for instance.

[RH-Calvin]

301 redirect is the most efficient and Search Engine Friendly method for webpage redirection. It's not that hard to implement and it should preserve your search engine rankings for that particular page. If you have to change file names or move pages around, it's the safest option. The code "301" is interpreted as "moved permanently".