Cannot read property 'mData' of undefined

For that above issue due to placing colspan or rowspan in the html table.

<table class="table table-striped table-bordered" id="studentInfo">
  <thead>
    <tr>
      <th>S.No</th>
      <th>Name</th>
      <th>class</th>
      <th>School</th>
      <th>Marks</th>
      <th>Address</th>
      <th colspan="4"></th>
    </tr>
  </thead>
The above code doesn't work

you need to place like below
<table class="table table-striped table-bordered" id="studentInfo">
  <thead>
    <tr>
      <th>S.No</th>
      <th>Name</th>
      <th>class</th>
      <th>School</th>
      <th>Marks</th>
      <th>Address</th>
       <th></th>
       <th></th>
       <th></th>
        <th></th>
    </tr>
  </thead>