Laravel 5.8: parse_url() expects parameter 1 to be string, array given

Question

I want to insert some data into the DB like this via Eloquent:

public function postDarkhast(Request $request)
    {
        RequestTable::create([
            'course_name' => 1,
            'course_start' => 2,
            'course_end' => 3,
            'course_sessions' => 4,
            'course_time' => 5,
            'course_members' => 6,
            'course_mentor' => 7,
            'course_samaneh' => 8,
        ]);
        
        Session::flash('darkhastSubmitted','Request submitted');
        
        return redirect()->back();
    }

But I don't know why I get this error:

parse_url() expects parameter 1 to be string, array given

I don't know where this parse_url() comes from and the reason behind this error.

So if you know, please help me out solving this issue?

Here is also the Model RequestTable:

class RequestTable extends Model
{
    protected $table = "requests";
    protected $guarded = [];
}

And the fields of requests table has this config:

varchar(191)    utf8_general_ci   NULL

---

UPDATE #1:

I put the RequestTable::create([...]); in a Try.. Catch and this error return:

Answer 1

It looks like you are importing theRequest from Symfony's HttpFoundation instead of Illuminate. Please try importing the Request at the top like: use Illuminate\Http\Request;.

Looking at your error, I believe you are importing the Symfony\Component\HttpFoundation\Request instead.