include variable in ejs blocks :unexpected token error % - node.js

I am trying to append a variable with block in ejs
this is my variable <%=sails.config.items.base_url%>
<%block('searchScript','<script src='<%=sails.config.items.base_url%>'></script>')%>
But i got the following error
"stack": "SyntaxError: Unexpected token %= in \"/var/www/node/cushbuart/views/user/edit-art.ejs\"\n


Try this
<%=sails.config.items.base_url%>
<%block('searchScript','<script src='+ sails.config.items.base_url +'></script>')%>

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