Version: 4.0.6 Reporter: Büro Ballmann Weber —
this happened when I tried to save a new channel called “Ausstellungen (Index)”:
Fatal error: Uncaught TypeError: Argument 1 passed to EllisLab\ExpressionEngine\Model\Channel\Channel::duplicatePreferences() must be an instance of EllisLab\ExpressionEngine\Model\Channel\Channel, null given, called in /html/kunstverein/kvh18-004-ee4-structure/system/ee/EllisLab/ExpressionEngine/Controller/Channels/Channels.php on line 1428 and defined in /html/kunstverein/kvh18-004-ee4-structure/system/ee/EllisLab/ExpressionEngine/Model/Channel/Channel.php:292 Stack trace: #0 /html/kunstverein/kvh18-004-ee4-structure/system/ee/EllisLab/ExpressionEngine/Controller/Channels/Channels.php(1428): EllisLab\ExpressionEngine\Model\Channel\Channel->duplicatePreferences(NULL) #1 /html/kunstverein/kvh18-004-ee4-structure/system/ee/EllisLab/ExpressionEngine/Controller/Channels/Channels.php(255): EllisLab\ExpressionEngine\Controller\Channels\Channels->saveChannel(Object(EllisLab\ExpressionEngine\Model\Channel\Channel)) #2 /html/kunstverein/kvh18-004-ee4-structure/system/ee/EllisLab/ExpressionEngine/Controller/Channels/Channels.php(1 in /html/kunstverein/kvh18-004-ee4-structure/system/ee/EllisLab/ExpressionEngine/Model/Channel/Channel.php on line 292
Open system/ee/EllisLab/ExpressionEngine/Controller/Channels/Channels.php and find this code on line 1423:
if ($dupe_id !== FALSE AND is_numeric($dupe_id))And REPLACE it with this:
if ( ! empty($dupe_id) && is_numeric($dupe_id))ExpressionEngine implements Markdown Extra and BBCode. Please see the Markdown Extra docs and the BBCode Wikipedia article for a full reference.
**bold**, __bold__, *italics*, _italics_, ~strike/del~, `code()`
bold, italics, strike/del, code()
Link: [link title](https://example.com)
Image: 
[blockquote]...[/blockquote], [quote]...[/quote], and Markdown style:
> Some quoted text. > > This is all one quote.
[code]...[/code], and you can also specify the language for syntax highlighting, [code=php]...[/code]
GitHub flavored Markdown code fences are also supported:
```
public function decoderRing($str)
{
return str_rot13($str);
}
```