laravel - htmlentities() expects parameter 1 to be string, array given, i have tried everything -

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this blade file code- 

<select name="edu_name[]" class="form-control input-md" onchange="choosecontact(this)">                             <option selected="true" style="display:none;">select degree</option>                                 @foreach ($objmastereducation $dropdown)                                     <option value="{{$dropdown->id}}" class="form-control">{{$dropdown->edu_name}}</option>                                 @endforeach                                 </select>           </div>                 </div>                 </div>                 <div class="row-fluid">             <div class="col-sm-4">                     <div class="form-group">                         <input type="text" name="institute[]" id="institute" class="form-control input-md" placeholder="institute" tabindex="1" value="{{ old('institute') }}">                     </div>                 </div> </div>           <div class="row-fluid">  <div class="col-sm-2">                     <div class="form-group">                         <input type="text" name="from_year[]" id="from_year" class="form-control input-md" placeholder="from year" tabindex="1" value="{{ old('from_year') }}">                     </div>                 </div>                 </div>                 <div class="row-fluid">                 <div class="col-sm-2">                     <div class="form-group">                         <input type="text" name="to_year[]" id="to_year" class="form-control input-md" placeholder="to year" tabindex="1" value="{{ old('to_year') }}">                     </div>                     </div>                 </div>                 <div class="row-fluid">                 <div class="col-sm-2">                     <div class="form-group">                         <input type`=`"text" name="percentage[]" id="percentage" class="form-control input-md" placeholder="percentage" tabindex="1" value="{{ old('percentage') }}">                     </div>             </div>

....its giving error in request file have tried not saving multiple data database except first row of form field


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