GroupBy CAMl query is giving Render Failed error

Question

Hello,

I have custom list definition.I want to display rows as GroupBy with some column names. I added a query in Schema.xml like below.

<Query>
      <GroupBy>
            <FieldRef Name="Title" visible="false" />
            <FieldRef Name="Followed By" />
       </GroupBy>
</Query>

If i use two filter group its working fine.No issues.But if i try to add one more filter like below i am getting error.

<Query>
      <GroupBy>
            <FieldRef Name="Title" visible="false" />
            <FieldRef Name="Followed By" />
            <FieldRef Name="Expected From" />
       </GroupBy>
</Query>

What i have to do?

Thanks in advance. Syed.