Unable to remove customware application links

Confirm that you want to delete the Application Link to 'Keyteq Zendesk' (Zendesk).
Contacting the remote application
net.customware.plugins.connector.core.applinks.AppLinksManifestProducer$1.getIconUrl()Ljava/net/URI;

@4000000051d132e70aa6bcec java.lang.AbstractMethodError: net.customware.plugins.connector.core.applinks.AppLinksManifestProducer$1.getIconUrl()Ljava/net/URI;
@4000000051d132e70aa6c0d4       at com.atlassian.applinks.core.rest.model.ManifestEntity.<init>(ManifestEntity.java:85)
@4000000051d132e70aa6dc2c       at com.atlassian.applinks.core.rest.ManifestResource.response(ManifestResource.java:103)
@4000000051d132e70aa6e014       at com.atlassian.applinks.core.rest.ManifestResource.getManifestFor(ManifestResource.java:97)
@4000000051d132e70aa6e014       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
@4000000051d132e70aa6e3fc       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
@4000000051d132e70aa6e7e4       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@4000000051d132e70aa6ebcc       at java.lang.reflect.Method.invoke(Method.java:597)
@4000000051d132e70aa6ebcc       at com.atlassian.plugins.rest.common.interceptor.impl.DispatchProviderHelper$ResponseOutInvoker$1.invoke(DispatchProviderHelper.java:234)
@4000000051d132e70aa6f784       at com.atlassian.plugins.rest.common.interceptor.impl.DispatchProviderHelper$1.intercept(DispatchProviderHelper.java:100)
@4000000051d132e70aa6fb6c       at com.atlassian.plugins.rest.common.interceptor.impl.DefaultMethodInvocation.invoke(DefaultMethodInvocation.java:61)
@4000000051d132e70aa6ff54       at com.atlassian.applinks.core.rest.context.ContextInterceptor.intercept(ContextInterceptor.java:19)
@4000000051d132e70aa7033c       at com.atlassian.plugins.rest.common.interceptor.impl.DefaultMethodInvocation.invoke(DefaultMethodInvocation.java:61)
@4000000051d132e70aa70724       at com.atlassian.plugins.rest.common.interceptor.impl.DispatchProviderHelper.invokeMethodWithInterceptors(DispatchProviderHelper.java:132)
@4000000051d132e70aa70b0c       at com.atlassian.plugins.rest.common.interceptor.impl.DispatchProviderHelper$ResponseOutInvoker._dispatch(DispatchProviderHelper.java:230)
@4000000051d132e70aa71e94       at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
@4000000051d132e70aa7227c       at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
@4000000051d132e70aa72a4c       at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
@4000000051d132e70aa72e34       at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
@4000000051d132e70aa72e34       at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
@4000000051d132e70aa7321c       at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
@4000000051d132e70aa73604       at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
@4000000051d132e70aa739ec       at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
@4000000051d132e70aa73dd4       at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
@4000000051d132e70aa741bc       at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
@4000000051d132e70aa745a4       at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
@4000000051d132e70aa745a4       at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
@4000000051d132e70aa7498c       at com.atlassian.plugins.rest.module.RestDelegatingServletFilter$JerseyOsgiServletContainer.doFilter(RestDelegatingServletFilter.java:178)
@4000000051d132e70aa7515c       at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:795)
@4000000051d132e70aa75544       at com.atlassian.plugins.rest.module.RestDelegatingServletFilter.doFilter(RestDelegatingServletFilter.java:73)
@4000000051d132e70aa7592c       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa75d14       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa760fc       at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
@4000000051d132e70aa764e4       at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
@4000000051d132e70aa768cc       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa76cb4       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa76cb4       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa7786c       at com.atlassian.plugins.rest.module.servlet.RestServletUtilsUpdaterFilter.doFilterInternal(RestServletUtilsUpdaterFilter.java:26)
@4000000051d132e70aa77c54       at com.atlassian.plugins.rest.module.servlet.RestServletUtilsUpdaterFilter.doFilter(RestServletUtilsUpdaterFilter.java:40)
@4000000051d132e70aa77c54       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa78424       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa78424       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa7880c       at com.atlassian.applinks.core.rest.context.ContextFilter.doFilter(ContextFilter.java:25)
@4000000051d132e70aa78bf4       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa793c4       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa797ac       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa79f7c       at com.atlassian.agmp.integration.jira.ReprovisionConfigFilter.doFilter(ReprovisionConfigFilter.java:87)
@4000000051d132e70aa7a364       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa7a74c       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa7ab34       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa7af1c       at com.atlassian.agmp.gdata.servlet.GDataServiceErrorServletFilter.doFilter(GDataServiceErrorServletFilter.java:43)
@4000000051d132e70aa7af1c       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa7b6ec       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa7b6ec       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa7bad4       at com.atlassian.mywork.client.filter.ServingRequestsFilter.doFilter(ServingRequestsFilter.java:37)
@4000000051d132e70aa7bebc       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa7ca74       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa7ca74       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa7ce5c       at com.atlassian.studio.core.servlet.filter.AlacarteLicenseEnforcer.doFilter(AlacarteLicenseEnforcer.java:71)
@4000000051d132e70aa7d244       at com.atlassian.studio.jira.servlet.filter.AlacarteLicenseJiraEnforcer.doFilter(AlacarteLicenseJiraEnforcer.java:121)
@4000000051d132e70aa7d62c       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa7da14       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa7ddfc       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa7ddfc       at com.atlassian.prettyurls.filter.PrettyUrlsDispatcherFilter.doFilter(PrettyUrlsDispatcherFilter.java:60)
@4000000051d132e70aa7e1e4       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa7e5cc       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa7f184       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa7f56c       at com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFilter.doFilter(PrettyUrlsSiteMeshFilter.java:92)
@4000000051d132e70aa7f56c       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa7fd3c       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa7fd3c       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@4000000051d132e70aa80124       at com.atlassian.prettyurls.filter.PrettyUrlsMatcherFilter.doFilter(PrettyUrlsMatcherFilter.java:56)
@4000000051d132e70aa8050c       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@4000000051d132e70aa808f4       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@4000000051d132e70aa808f4       at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
@4000000051d132e70aa814ac       at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)