When I try to export a content view with a thumbnail column as an Excel file an error occurs.

> stackTrace : javax.servlet.ServletException: Encountered ")" at line 1, column 57.
> Was expecting one of:
>     "." ...
>     "}" ...
>     "[" ...
>     ">" ...
>     "gt" ...
>     "<" ...
>     "lt" ...
>     ">=" ...
>     "ge" ...
>     "<=" ...
>     "le" ...
>     "==" ...
>     "eq" ...
>     "!=" ...
>     "ne" ...
>     "&&" ...
>     "and" ...
>     "||" ...
>     "or" ...
>     "*" ...
>     "+" ...
>     "-" ...
>     "?" ...
>     "/" ...
>     "div" ...
>     "%" ...
>     "mod" ...
>     "(" ...
>     
>   at javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
>   at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
>   at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
>   at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
>   at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
>   at org.nuxeo.elasticsearch.web.sync.UIThreadMarker.doFilter(UIThreadMarker.java:48)
>   at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
>   at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.core.management.jtajca.internal.Log4jWebFilter.doFilter(Log4jWebFilter.java:69)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.mobile.filter.ApplicationRedirectionFilter.doNoRedirect(ApplicationRedirectionFilter.java:165)
>   at org.nuxeo.ecm.mobile.filter.ApplicationRedirectionFilter.doFilter(ApplicationRedirectionFilter.java:95)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilterInternal(NuxeoAuthenticationFilter.java:431)
>   at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:51)
>   at org.nuxeo.ecm.platform.ui.web.auth.oauth.NuxeoOAuthFilter.doFilter(NuxeoOAuthFilter.java:122)
>   at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
>   at org.nuxeo.ecm.platform.ui.web.auth.oauth2.NuxeoOAuth2Filter.doFilter(NuxeoOAuth2Filter.java:83)
>   at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
>   at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilter(NuxeoAuthenticationFilter.java:399)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.web.common.exceptionhandling.NuxeoExceptionFilter.doFilter(NuxeoExceptionFilter.java:77)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.web.common.encoding.NuxeoEncodingFilter.doFilter(NuxeoEncodingFilter.java:75)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
>   at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486)
>   at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411)
>   at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
>   at org.nuxeo.ecm.platform.ui.web.rest.FancyURLFilter.doFilter(FancyURLFilter.java:112)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.mobile.filter.ApplicationRedirectionFilter.doNoRedirect(ApplicationRedirectionFilter.java:165)
>   at org.nuxeo.ecm.mobile.filter.ApplicationRedirectionFilter.doFilter(ApplicationRedirectionFilter.java:95)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.web.common.requestcontroller.filter.NuxeoRequestControllerFilter.doFilter(NuxeoRequestControllerFilter.java:142)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.webdav.service.WIRequestFilter.doFilter(WIRequestFilter.java:61)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilterInternal(NuxeoAuthenticationFilter.java:586)
>   at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:51)
>   at org.nuxeo.ecm.platform.ui.web.auth.oauth.NuxeoOAuthFilter.doFilter(NuxeoOAuthFilter.java:122)
>   at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
>   at org.nuxeo.ecm.platform.ui.web.auth.oauth2.NuxeoOAuth2Filter.doFilter(NuxeoOAuth2Filter.java:83)
>   at org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:49)
>   at org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilter(NuxeoAuthenticationFilter.java:399)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.web.common.requestcontroller.filter.NuxeoCorsFilter.doFilter(NuxeoCorsFilter.java:51)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.web.common.exceptionhandling.NuxeoExceptionFilter.doFilter(NuxeoExceptionFilter.java:77)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.nuxeo.ecm.platform.web.common.encoding.NuxeoEncodingFilter.doFilter(NuxeoEncodingFilter.java:75)
>   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
>   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
>   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
>   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
>   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
>   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
>   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
>   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
>   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
>   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
>   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
>   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
>   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>   at java.lang.Thread.run(Thread.java:745) 

When I disable the column the the Excel export works though a strange entry appears in the first column of the Excel sheet:

<input id="nxw_listing_ajax_selection_box" type="checkbox" name="nxw_listing_ajax_selection_box" onclick="RichFaces.ajax(this,event,{"sourceId":this,"parameters":{"javax.faces.behavior.event":"click","org.richfaces.ajax.component":"nxw_listing_ajax_selection_box"} } )" />

The configuration of the column is

                <column name="listing_thumbnail">
                    <properties mode="any">
                        <property name="useFirstWidgetLabelAsColumnHeader">true</property>
                        <property name="columnStyleClass"/>
                        <property name="label">Thumbnail</property>
                        <property name="sortPropertyName"/>
                    </properties>
                    <properties mode="edit_sort_infos">
                        <property name="showInSortInfoSelection">false</property>
                    </properties>
                    <properties mode="edit_sort_infos_map">
                        <property name="showInSortInfoSelection">false</property>
                    </properties>
                    <properties mode="csv">
                        <property name="isHidden">true</property>
                    </properties>
                    <properties mode="pdf">
                        <property name="isHidden">true</property>
                    </properties>
                </column>

1. Is there another default way of excluding thumbnails or other columns from csv export?
2. How can I disable the export of the first column in the Excel output containing the input tag (“nxw_listing_ajax_selection_box”)?