SP2013 RegisterSod is not defined – Error

Hi Friends,

We are using SP2013 for our Customer Portal.

Master Page is accessing these hive below files and got this error.

<script type=”text/javascript”>RegisterSod(“initstrings.js”, “\u002f_layouts\u002f15\u002f1033\u002finitstrings.js?rev=2N3pk\u00252FwjnG3Tj9o5NrqHcg\u00253D\u00253D”);</script>
<script type=”text/javascript”>RegisterSod(“strings.js”, “\u002f_layouts\u002f15\u002f1033\u002fstrings.js?rev=y6khbhv1Os2YPb5X0keqRg\u00253D\u00253D”);RegisterSodDep(“strings.js”, “initstrings.js”);</script>
<script type=”text/javascript”>RegisterSod(“sp.init.js”, “\u002f_layouts\u002f15\u002fsp.init.js?rev=jvJC3Kl5gbORaLtf7kxULQ\u00253D\u00253D”);</script>
<script type=”text/javascript”>RegisterSod(“sp.res.resx”, “\u002f_layouts\u002f15\u002fScriptResx.ashx?culture=en\u00252Dus\u0026name=SP\u00252ERes\u0026rev=yNk\u00252FhRzgBn40LJVP\u00252BqfgdQ\u00253D\u00253D”);</script>
<script type=”text/javascript”>RegisterSod(“sp.ui.dialog.js”, “\u002f_layouts\u002f15\u002fsp.ui.dialog.js?rev=3Oh2QbaaiXSb7ldu2zd6QQ\u00253D\u00253D”);RegisterSodDep(“sp.ui.dialog.js”, “sp.init.js”);RegisterSodDep(“sp.ui.dialog.js”, “sp.res.resx”);</script>
<script type=”text/javascript”>RegisterSod(“core.js”, “\u002f_layouts\u002f15\u002fcore.js?rev=eO228IFs9\u00252B4m4mcGscwRoQ\u00253D\u00253D”);RegisterSodDep(“core.js”, “strings.js”);</script>
<script type=”text/javascript”>RegisterSod(“foldhyperlink.js”, “\u002f_layouts\u002f15\u002ffoldhyperlink.js?rev=JnjM4kpe0i1y9awK3p5UJw\u00253D\u00253D”);</script>

ReferenceError: RegisterSod is not defined <anonymous>
ReferenceError: RegisterSod is not defined <anonymous>
ReferenceError: RegisterSod is not defined <anonymous>

Kindly help us to solve this issue.

Thanks,

G Deepak