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An error occurred while processing the template. 
Can't convert this string to number: "laundry-machinery/industrial-dryers"
The blamed expression:
==> tempString?substring(0, tempString?length)?number  [in template "20101#20127#94738" at line 19, column 63]

----
FTL stack trace ("~" means nesting-related):
	- Failed at: #assign selectedCategoryId = tempStri...  [in template "20101#20127#94738" at line 19, column 33]
	- Reached through: @liferay_aui.col width=100  [in template "20101#20127#94738" at line 5, column 25]
	- Reached through: @liferay_aui.row  [in template "20101#20127#94738" at line 3, column 9]
----
1<#if entries?has_content> 
2    <div class="container clients-list">  
3    	<@liferay_aui.row> 
4    		<#list entries as entry> 
5    			<@liferay_aui.col width=100> 
6    			    <div class="categories-filter"> 
7        				<div class="results-header"> 
8                            <span> <@liferay.language key="com.fagorindustrial.news.tabs-title.show"/></span> 
9        				</div> 
10        				<#assign categories = entry.getCategories() /> 
11                        <#assign selectedCategoryId = -1 /> 
12                        <#assign currentURL = portalUtil.getCurrentURL(renderRequest) /> 
13 
14                        <#if currentURL?index_of("categories/") != -1 > 
15                            <#assign tempString = currentURL?substring(currentURL?index_of("categories/")+11, currentURL?length) />   
16                            <#if tempString?index_of("&") != -1> 
17                                <#assign selectedCategoryId = tempString?substring(0, tempString?index_of("&"))?number />  
18                            <#else> 
19                                <#assign selectedCategoryId = tempString?substring(0, tempString?length)?number />  
20                            </#if> 
21                        </#if>  
22 
23        				<#if serviceLocator?? && selectedCategoryId != -1> 
24    						<#assign assetCategoryService = serviceLocator.findService("com.liferay.asset.kernel.service.AssetCategoryService") /> 
25                            <#assign selectedCategory = assetCategoryService.getCategory(selectedCategoryId) /> 
26 
27                            <#assign rootCategory = selectedCategory /> 
28                            <#if rootCategory.parentCategoryId != 0> 
29                                <#assign rootCategory = assetCategoryService.getCategory(selectedCategory.parentCategoryId) />                                 
30                            </#if> 
31 
32                            <#assign categories = assetCategoryService.getChildCategories(rootCategory.categoryId) /> 
33    					</#if> 
34        				<@displayCategories categories=categories /> 
35        			</div> 
36    			</@liferay_aui.col> 
37    		</#list> 
38    	</@liferay_aui.row> 
39	</div> 
40</#if> 
41 
42 
43<#macro displayCategories categories> 
44 
45 
46	<#if categories?has_content> 
47		<ul class="categories"> 
48            <#if selectedCategoryId == -1> 
49		        <li class="selected"> 
50    		        <a href="/our-customers"><span><@liferay.language key="com.fagorindustrial.news.tabs-name.all"/></span></a> 
51		        </li> 
52            </#if> 
53			<#list categories as category> 
54			    <#if selectedCategoryId != -1 || (selectedCategoryId == -1 && category.getParentCategoryId() == 0)> 
55                     
56                    <#assign class = "" /> 
57                    <#if category.categoryId == selectedCategoryId> 
58                        <#assign class = 'class="selected"' /> 
59                    </#if>	    
60 
61    				<li ${class}> 
62    					<#assign categoryURL = renderResponse.createRenderURL() /> 
63    					${categoryURL.setParameter("resetCur", "true")} 
64    					${categoryURL.setParameter("categoryId", category.getCategoryId()?string)} 
65                        <a href="${categoryURL}">${category.getTitle(locale)}</a>   
66    				</li> 
67    			</#if>	 
68			</#list> 
69		</ul> 
70	</#if> 
71    <#if selectedCategoryId != -1> 
72        <a class="back-link" href="/nuestros-clientes"> 
73            <img class="icon-arrow red" src="/o/fagor-industrial-portal-theme/images/ico-arrow-right.svg"> 
74            <span><@liferay.language key="back"/></span> 
75        </a> 
76    </#if> 
77</#macro>