Thanks for sharing the issue. Which version of wordpress are you using? Please try upgrading to the latest wordpress version ( 5.5.3 ) and see if it resolves the issue.
The message which you got is generally shown if there is a space after the trailing PHP tag in the code: https://make.wordpress.org/support/handbook/appendix/breakfix-lessons/php-whitespace-headers-already-sent/
Bittips Tip Jar plugin code did not have that issue but we removed the trailing PHP tag anyway. Please install the latest version of the plugin and see if the issue got resolved.
Thank you – I am using the latest version of WordPress. It did not resolve the issue. When I tried to activate the plugin, absolutely nothing happened. So I tried to delete it and it wouldn’t allow me to delete the plugin saying it was activated but in the plugins area it will still showing as inactive.
I was finally able to delete it and then reinstall it. However, I got the same notice that said, “The plugin generated 3 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.”
I have left the plugin installed but I notice that any time I make a change in admin and then save, the admin panel goes completely blank. The only way I am able to retrieve my site is to re-enter the site name and “/wp-admin/index.php”.
That is a very strange behavior, however, it does not look like this plugin is the root cause. Maybe some other plugin is causing the issue or interfering with it somehow. Please send an email to support@bit.tips with your contact email id. It looks like we will need to setup a call to better understand your specific WordPress installation as the issue is not reproducible at our end. Thanks for your patience.
