Title: receiving error on widget.php Last modified: August 20, 2016 --- # receiving error on widget.php * [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/) * Hi, * I am supposed to update a wordpress site which was made in 2009. * I have created a new theme based on twentyeleven on my local server and it is working well on my machine. (I changed some html/css only) then I uploaded only the theme to the server in the theme folder. I was expecting to activate the new theme and be able to see it on the site. when I activated the new theme, it gave me error in something with widget.php. * So, once I compared the old widget.php with my new widget.php, I noticed they MIGHT BE slightly different. * So, I switched the old widget.php with my new one. Still the site is giving me error with widget.php. So, I switched it back to old widget.php and still not working. when I type the url it gives me this error:Fatal error: Call to undefined function add_theme_support() in /home/wilmax1/public_html/wordpress/wp-includes/ widgets.php on line 561 * Does anybody knows how to solve this issue please? Hope I have explained it OK. If need more info, let me know. * I’d really appreciate it. Viewing 15 replies - 1 through 15 (of 25 total) 1 [2](https://wordpress.org/support/topic/receiving-error-on-widgetphp/page/2/?output_format=md) [→](https://wordpress.org/support/topic/receiving-error-on-widgetphp/page/2/?output_format=md) * [fwoan](https://wordpress.org/support/users/fwoan/) * (@fwoan) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747796) * [http://codex.wordpress.org/Function_Reference/add_theme_support](http://codex.wordpress.org/Function_Reference/add_theme_support) * Support for something like widgets should be done in functions.php * Thread Starter [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747797) * Thanks for response. I am really not familiar with php and how the files connected. I basically put the files back as it was and it is not working. Can it be broken just by deleting and uploading the files? * I just need to get it back to what it was. And then work away from there. The site is down now. * [fwoan](https://wordpress.org/support/users/fwoan/) * (@fwoan) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747799) * Remove that function from widgets.php and place it into functions.php * [kmessinger](https://wordpress.org/support/users/kmessinger/) * (@kmessinger) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747800) * Did you actually upgrade wp? This thread shows your version as 2.8.5. * Thread Starter [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747801) * I haven’t upgrade it. It is still old. I have undone uploading the new theme and new widget.php. * I am not sure what I have to replace here. I need to know why now that everything is back as it was, it is still not working. * [kmessinger](https://wordpress.org/support/users/kmessinger/) * (@kmessinger) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747802) * Twentyeleven won’t run on a 2009 WordPress. * What is the url? * Thread Starter [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747803) * Well, that is good to know. But I have deleted the new theme. What is causing problem still? * Url is wilmax.ca * [kmessinger](https://wordpress.org/support/users/kmessinger/) * (@kmessinger) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747805) * Download a fresh copy of 2.8.5 here, [http://wordpress.org/download/release-archive/](http://wordpress.org/download/release-archive/) * Extract the widgets.php and upload it to the server. There is nothing on line 561 in that version. * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747806) * You are trying to use a WP 3 function (add_theme_support) to a WP 2.8.5 site. In short – your site is too old to support this function. * Thread Starter [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747812) * I have the widget.php from the version that is old. I am using the right widget. php for my version I think, because I didn’t changes it. * I am not trying to add any function. I am just wondering why the old version with its old widget.php is not working anymore. * By the way, I am not sure which version the old site was on. Is there any file that has this information that I can look up? * Thanks a lot * Thread Starter [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747813) * Oh, by the way, I checked the widget.php and it doesn’t have anything in regard to that function in it, even on line 561. even in function.php, there is no such thing!! * It is bizarre! * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747815) * You cannot use add_theme_support() on a 2.8.5 WP install. The problem is in your theme. * Thread Starter [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747817) * Which theme, the old one or new one? The new one is removed later. * [kmessinger](https://wordpress.org/support/users/kmessinger/) * (@kmessinger) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747818) * > I am using the right widget.php for my version I think, because I didn’t changes > it. * I don’t think so. The version of widget.php you are using has `add_theme_support(' widgets');` Version 2.8.5 did not support that so you must have the wrong file. * > By the way, I am not sure which version the old site was on. Is there any file > that has this information that I can look up? * wp-includes/version.php * Thread Starter [Helen-kh](https://wordpress.org/support/users/helen-kh/) * (@helen-kh) * [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/#post-2747822) * So, the version is 2.8.4, that is for sure 🙂 * I am sure I have put the right version of widget.php and when I looked for that function in it, there is nothing there. * I know I have put the old widget.php, because I had copied it already and I used the copy to upload it again. Viewing 15 replies - 1 through 15 (of 25 total) 1 [2](https://wordpress.org/support/topic/receiving-error-on-widgetphp/page/2/?output_format=md) [→](https://wordpress.org/support/topic/receiving-error-on-widgetphp/page/2/?output_format=md) The topic ‘receiving error on widget.php’ is closed to new replies. ## Tags * [Call to undefined function:](https://wordpress.org/support/topic-tag/call-to-undefined-function/) * [php-error](https://wordpress.org/support/topic-tag/php-error/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 25 replies * 4 participants * Last reply from: [esmi](https://wordpress.org/support/users/esmi/) * Last activity: [14 years ago](https://wordpress.org/support/topic/receiving-error-on-widgetphp/page/2/#post-2747934) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics