How to edit a page with an error

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If I have a page that has error in the script and is not showing properly, how can I rectify the coding, as I am unable to edit it? The bar with the edit function on the top left does not show!!
Can you please help me?

 
hutman replied on at Permalink Reply
hutman
Are you able to go back to a previous version by going to the Dashboard -> Full Sitemap?
Greenblue replied on at Permalink Reply
Not possible as I am getting the same error everywhere. looks like it is related to a table which has been deleted sometime ago, is there a way to edit the code?
hutman replied on at Permalink Reply
hutman
Is the error you are getting a javascript error or a PHP error? If it's a javascript error you should be able to login and check the dashboard, if it's a PHP error it would depend on what the error is and what type of block on the page is causing it.