I found the fix for it here http://museumthemes.com/wordpress/fixed-redeclare-checkactivewidgets-error-wordpress-child-themes/
I found the fix for it here http://museumthemes.com/wordpress/fixed-redeclare-checkactivewidgets-error-wordpress-child-themes/
I have tried the following, maybe this helps you jasmitvala:
1. turned php error messages option on (from control panel of my host)
2. checked the error msg told me what file caused the issue
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