Undefined variable $task [closed] - php

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I don't understand why it shows me that variable is defined. I followed video tutorial but can't understand why it works in video but not for me.
Need help to understand this. Feels like simple mistake but I can't find the solution.

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I have a manhwa website called kmanhwa.com but I have a problem. When people open my website they see original template color then they see the color that I modified from the original.
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PHP Page Not Loading Content/Data [closed]

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Closed 5 days ago.
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Out of the blue, my old website stopped loading content and I can't figure out why:
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Why PHP cannot execute the echo "<?"? [closed]

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Closed 4 years ago.
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Can some of you tell me please why when I echo "<?", the <? is not displayed?
I'm sorry, maybe it's very stupid question, but I need to dig this language more deeper.
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Page crashes with no clue why [closed]

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Closed 7 years ago.
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I have a webpage weblup(dot)net/templates/template3 (replace (dot) with a '.') and it just crashes when I run it. It was working fine not long ago but I have no clue why it's crashing all of a sudden. The biggest change before this happened was that I changed a picture.
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Laravel function name must be a string [closed]

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Closed 8 years ago.
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Laravel
What mistake am I actually doing?
Please have a look at the image below:
http://1drv.ms/1ybX4Cg
I think
$body['user_id'] = $user()->id;
should be
$body['user_id'] = $user->id;

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