Chat xxxon line
Questions like "Headers already sent" or "Calling a member of a non-object" pop up frequently on Stack Overflow.
The root cause of those questions is always the same.
Related Questions: If you are using Word Press, check the theme files.
When I upgraded a site to a new version of Word Press, I was unable to update the theme because it has not been updated in several years. It turned out that the file had more than one Please turn on 'output buffering' feature in configuration file if possible. It sends the html file is saved in the output buffer and sent to the client only after the script stops, so if two headers are issued at different location then the old header will be replaced new header. This is a fatal error which will stop the script (forward compatibility notice: It will become a catchable error starting with PHP 7).
Hence, this list tries to explain the solution in a general way to apply.
If your question has been marked as a duplicate of this, please find your error message below and apply the fix to your code.
) the 27th of December 2017, and a few of us from “our little group” had arranged to meet up for the traditional Christmas Run in and around the Ceiriog Valley just south of Llangollen – That’s Llangollen in the top middle of the above map, and the blob in the bottom right corner is Oswestry, to give you an idea where we were… 😉 We normally ‘lane on a Sunday, but the lads had said we’d go out on the Wednesday after Boxing Day this year, I said it wasn’t a public holiday and my shop would be open, but they pointed out that Wednesday is my day off! 😉 A good meet and greet, as we haven’t seen Colin and Gary since the July trip(s) to the Lake District, and Riccy and Joel have joined us once again…
Only when the form is submitted and this code is run a second time will the array index exist.
Most often this is a sign that the code has missing checks for error conditions.
Validate that an object is actually an object before calling its methods. This happens when error reporting is turned off and a fatal error (often syntax error) occurred.
Other users having the same error can not easily read the solution out of it because they are too localized.
That is sad, because once you understood the root cause, fixing the error is trivial.
The white page will then display the error message.