Fix #1533 (Invalid LDAP Cert Path no longer crashes app)

cps/services/simpleldap.py

@@ -65,7 +65,10 @@ def init_app(app, config):
     app.config['LDAP_GROUP_OBJECT_FILTER'] = config.config_ldap_group_object_filter
     app.config['LDAP_GROUP_MEMBERS_FIELD'] = config.config_ldap_group_members_field
 
-    _ldap.init_app(app)
+    try:
+        _ldap.init_app(app)
+    except RuntimeError as e:
+        log.error(e)
 
 
 def get_object_details(user=None, group=None, query_filter=None, dn_only=False):