laravel 9 form validation error has space between field name

There are space comes after every character of field name while displaying errors in blade template in laravel 9 as mentioned in uploaded image

my code is mentioned as below

CODE IN HTML IS :

<form action="{{route('saveAsset')}}" method="post">
                {{@csrf_field()}}
                
                <div class="form-group">
                    <label for="assetTitle" class="mt-2 mb-2">{{$assetCategory->category}} TITLE :</label>
                    <input type="text" class="form-control" name="assetTitle" id="assetTitle" placeholder="Enter Asset Title">
                </div>
                <div class="inputError">@error('assetTitle') Error: {{ $message }} @enderror </div>

                <input type="hidden" name="assetCateId" id="assetCateId" value="{{$assetCategory->id}}">
                
                @if(count($attributes) > 0)
                    @foreach($attributes as $attribute)
                        <label for="assetType-{{$attribute->attr_id}}" class="mt-4 mb-2">{{$attribute->attr_title}} : </label>
                        <div class="form-group">
                            <select class="form-select" name="{{$attribute->attr_title}}" id="attribute-{{$attribute->attr_id}}" aria-label="Default select example">
                                <option value="">Select {{$attribute->attr_title}}</option>
                                @foreach($attrValues as $attrValue)
                                    @if ($attrValue->attr_id == $attribute->attr_id && strlen($attrValue->value) > 0 )
                                    <option value="{{$attribute->attr_id}}-{{$attrValue->value_id}}" > {{$attrValue->value}}</option>
                                    @endif
                                @endforeach
                            </select>
                        </div>
                        <div class="inputError"> @error("{$attribute->attr_title}") Error: {{ $message }} @enderror </div>
                    @endforeach
                @endif
                <div>
                    <button type="submit" class="btn btn-primary mt-3 px-4">Save</button>
                </div>
            </form>

CODE IN CONTROLLER IS :

$fields = $req->input();
       

        $ValidationRules=[];
        foreach($fields as $fieldName=>$fieldvalue){
            
            if($fieldName == "assetTitle"){
                $ValidationRules[$fieldName] = 'required|unique:assets,title';
            }else{
                $ValidationRules[$fieldName] = 'required';
            }
        }
        $req->validate($ValidationRules);