When activating my plugin and only if wp debug mode is on, i get the message:
The plugin generated 255 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 did not see the headers already sent message, or the other possibilities mentioned in the message.
The plugin works as expected.
I would like to read those 255 chracters to see where they come from and so be able to repair for this error message.
Where do i find the 255 characters?