diff --git a/lib/nextcloud.sh b/lib/nextcloud.sh
index 356c04d..a5bafa7 100644
--- a/lib/nextcloud.sh
+++ b/lib/nextcloud.sh
@@ -267,6 +267,9 @@ start_nextcloud() {
 
   # Add admin user to group
   docker exec -u 33 nextcloud /var/www/html/occ group:adduser admin admin &> /dev/null
+  [ $? -ne 0 ] && fail "Couldn't run config.sh inside /federated/apps/nextcloud container"
+  docker exec -u 33 nextcloud /var/www/html/occ group:adduser admin admin &> /dev/null
+  [ $? -ne 0 ] && fail "Couldn't run config.sh inside /federated/apps/nextcloud container"
 
   # Setup admin email account
   docker exec -u 33 nextcloud bash -c "/var/www/html/occ mail:account:create admin admin admin@$DOMAIN mail.$DOMAIN 993 ssl admin@$DOMAIN $ADMINPASS mail.$DOMAIN 465 ssl admin@$DOMAIN $ADMINPASS password" &> /dev/null