JIRA becomes inacessible after upgrading JIRA Service Desk to 3.2.0.

Technical details
Log's referral number: 1949e8c6-a651-4a17-8ab8-d8f1b3666a10
Cause
Referer URL: http://localhost:8080/plugins/servlet/applications/versions-licenses
java.lang.RuntimeException: javax.servlet.ServletException: java.lang.IllegalArgumentException: Root page 'com.atlassian.jira.gadgets:dashboard-page' does not exist!
java.lang.RuntimeException: javax.servlet.ServletException: java.lang.IllegalArgumentException: Root page 'com.atlassian.jira.gadgets:dashboard-page' does not exist!
	at com.atlassian.web.servlet.plugin.DynamicAuthorizationServletForwarder.forward(DynamicAuthorizationServletForwarder.java:55) [?:?]
	at com.atlassian.web.servlet.plugin.DynamicAuthorizationServletForwarder.forwardSafely(DynamicAuthorizationServletForwarder.java:83) [?:?]
	at com.atlassian.web.servlet.plugin.SanitizingServletForwarder.forwardSafely(SanitizingServletForwarder.java:48) [?:?]
	at com.atlassian.web.servlet.plugin.RememberingServletForwarder.forwardSafely(RememberingServletForwarder.java:75) [?:?]
	at com.atlassian.web.servlet.plugin.ResolvingServletForwarder.forwardSafely(ResolvingServletForwarder.java:52) [?:?]
	at com.atlassian.web.servlet.plugin.request.RedirectInterceptingResponse.lambda$null$0(RedirectInterceptingResponse.java:43) [?:?]
	at java.util.Optional.map(Optional.java:215) [?:1.8.0_77]
	at com.atlassian.web.servlet.plugin.request.RedirectInterceptingResponse.lambda$sendRedirect$1(RedirectInterceptingResponse.java:43) [?:?]
	at java.util.Optional.flatMap(Optional.java:241) [?:1.8.0_77]
	at com.atlassian.web.servlet.plugin.request.RedirectInterceptingResponse.sendRedirect(RedirectInterceptingResponse.java:43) [?:?]
	at javax.servlet.http.HttpServletResponseWrapper.sendRedirect(HttpServletResponseWrapper.java:138) [servlet-api.jar:?]
	at com.atlassian.core.filters.HeaderSanitisingResponseWrapper.sendRedirect(HeaderSanitisingResponseWrapper.java:85) [atlassian-core-5.0.6.jar:?]
(...)