org.ametys.runtime.authentication.AccessDeniedException: Anonymous user tried to access the list of user populations on contexts '/sites/www,/sites-fo/www'.
	at org.ametys.core.user.population.PopulationContextHelper.getUserPopulationsOnContexts(PopulationContextHelper.java:296)
	at org.ametys.web.population.PopulationContextHelper.getUserPopulationsOnContexts(PopulationContextHelper.java:50)
	at org.ametys.core.user.population.PopulationContextHelper.getUserPopulationsOnContexts(PopulationContextHelper.java:327)
	at org.ametys.web.usermanagement.UserSignupManager.userExists(UserSignupManager.java:401)
	at org.ametys.web.usermanagement.UserSignupAction.temporarySignup(UserSignupAction.java:215)