From 3651b9484fa2179eeeba0d41263fc4a51e467e65 Mon Sep 17 00:00:00 2001
From: Jamie Curnow <jc@jc21.com>
Date: Fri, 6 Nov 2020 09:17:52 +1000
Subject: [PATCH] Fix for pip install error when there are no plugins to
 install

---
 backend/setup.js | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/backend/setup.js b/backend/setup.js
index 2a5ba969..d58a1606 100644
--- a/backend/setup.js
+++ b/backend/setup.js
@@ -187,11 +187,17 @@ const setupCertbotPlugins = () => {
 					}
 				});
 
-				const install_cmd = 'pip3 install ' + plugins.join(' ');
-				promises.push(utils.exec(install_cmd));
-				return Promise.all(promises).then(() => { 
-					logger.info('Added Certbot plugins ' + plugins.join(', ')); 
-				});
+				if (plugins.length) {
+					const install_cmd = 'pip3 install ' + plugins.join(' ');
+					promises.push(utils.exec(install_cmd));
+				}
+
+				if (promises.length) {
+					return Promise.all(promises)
+						.then(() => { 
+							logger.info('Added Certbot plugins ' + plugins.join(', ')); 
+						});
+				}
 			}
 		});
 };