Syntax error, unexpected '"', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) - laravel

Question

I got this error in Laravel:
ErrorException thrown with message "syntax error, unexpected '"', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) (View: C:\xampp\htdocs\blog\resources\views\posts\view.blade.php)"
Stacktrace:
#0 Symfony\Component\Debug\Exception\FatalThrowableError in C:\xampp\htdocs\blog\storage\framework\views\84082f7931aeac789ccd4bfb975980dd81818f2a.php:16
And here is the code of view.blade.php
#extends('layouts.app')
#section('content')
<div class="container">
<div class="row justify-content-center">
<div class="col-md-8 text-center">
<div class="card">
<div class="card-header">Post View</div>
<div class="card-body">
<div class="row">
<div class="col-md-4">
<!-- <ul class="list-group">
#if(count($categories) > 0)
#foreach($categories->all() as $category)
<li class="list-group-item"><a href='{{ url("category/{$category->id") }}'>{{$category->category}}</a></li>
#endforeach
#else
<p>No Category Found!</p>
#endif
</ul> -->
</div>
<div class="col-md-8">
</div>
</div>
</div>
</div>
</div>
</div>
</div>
#endsection

Answer 1

It looks like you have an unmatched opening brace { here:
url("category/{$category->id")
I suspect this is being parsed by the Blade template system, and it is struggling to make sense of it. This is why the error comes out of the cached file, rather than your own.
This sort of error can be discovered by committing the view file to version control, and then snipping away parts of it until the error no longer happens. By a process of trial and error, you can find the section that raises the exception.