I'm trying to install Magento 1.9 and I got this error , how can I solved it,

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  • click on refresh Commented Apr 3, 2017 at 12:11
  • Could you provide the full log content and not just a screenshot of the last few lines? Chances are that somewhere up the lines something went wrong. There is no telling what might be the issue now. Commented Apr 3, 2017 at 12:36

1 Answer 1


Try next:

Go to downloader/Maged/Connect.php, find

var response = transport.responseJSON || transport.responseText.JSONeval(true) || {};

replace it with:

var response = transport.responseJSON || JSON.parse(transport.responseText) || {};

This works for me when i try to install extension with "Exception during cache and session cleaning" message. Hope, this solution will help you.

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