Grails Runtime Exception

org.codehaus.groovy.grails.web.pages.exceptions.GroovyPagesException: Error applying layout : publicLayout

	at grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter.doFilter(GrailsAnonymousAuthenticationFilter.java:53)

	at grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter.doFilter(MutableLogoutFilter.java:62)

	at grails.plugin.springsecurity.web.SecurityRequestHolderFilter.doFilter(SecurityRequestHolderFilter.java:59)

	at filters.CsrfRequestLoggingFilter.doFilter(CsrfRequestLoggingFilter.groovy:72)

	at java.lang.Thread.run(Thread.java:748)

Caused by: org.codehaus.groovy.grails.web.pages.exceptions.GroovyPagesException: Error processing GroovyPageView: Error executing tag <g:render>: Error executing tag <g:pdfLink>: String index out of range: -1

	... 5 more

Caused by: org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <g:render>: Error executing tag <g:pdfLink>: String index out of range: -1

	at gsp_seuE11_layoutspublicLayout_gsp.run(gsp_seuE11_layoutspublicLayout_gsp.groovy:22)

	... 5 more

Caused by: org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <g:pdfLink>: String index out of range: -1

	at gsp_seuE11_layouts_personalitzacions_emserfumt_gsp$_run_closure2.doCall(gsp_seuE11_layouts_personalitzacions_emserfumt_gsp.groovy:254)

	at gsp_seuE11_layouts_personalitzacions_emserfumt_gsp.run(gsp_seuE11_layouts_personalitzacions_emserfumt_gsp.groovy:705)

	... 6 more

Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1

	at java.lang.String.substring(String.java:1960)

	at seue10.CopiaAutenticaTagLib$_closure2.doCall(CopiaAutenticaTagLib.groovy:42)

	... 8 more