test with no sites enabled

tasks/checks.yml

@@ -86,11 +86,21 @@
         var: apache_conf_loaded
         verbosity: 2
 
-    - name: Register the loaded sites
-      command: a2query -s
-      check_mode: false
-      changed_when: false
-      register: apache_sites_check
+    - name: Check loaded sites
+      block:
+
+        - name: Register the loaded sites
+          command: a2query -s
+          check_mode: false
+          changed_when: false
+          register: apache_sites_check
+
+      rescue:
+
+        - name: No sites enabled
+          set_fact:
+            apache_sites_loaded: []
+          when: '"No site matches" in apache_sites_check.stderr'
 
     - name: Debug the loaded sites
       debug:
@@ -100,6 +110,7 @@
     - name: Set an array of the loaded sites
       set_fact:
         apache_sites_loaded: "{{ apache_sites_loaded | default([]) + [ line.split(' ')[0] ] }}"
+      when: apache_sites_check.stdout is defined
       loop: "{{ apache_sites_check.stdout_lines }}"
       loop_control:
         loop_var: line