diff --git a/dist/index.js b/dist/index.js
index 7c8c8d85..f0ced4e4 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -15946,7 +15946,8 @@ const context = {
 	}),
 	ALIAS_DOMAINS: parser.getInput({
 		key: 'ALIAS_DOMAINS',
-		type: 'array'
+		type: 'array',
+		disableable: true
 	}),
 	PR_PREVIEW_DOMAIN: parser.getInput({
 		key: 'PR_PREVIEW_DOMAIN'
@@ -16040,6 +16041,7 @@ core.debug(
 
 module.exports = context
 
+
 /***/ }),
 
 /***/ 8396:
@@ -16183,8 +16185,8 @@ const execCmd = (command, args, cwd) => {
 	core.debug(`EXEC: "${ command } ${ args }" in ${ cwd || '.' }`)
 	return new Promise((resolve, reject) => {
 		const process = spawn(command, args, { cwd })
-		let stdout
-		let stderr
+		let stdout = ''
+		let stderr = ''
 
 		process.stdout.on('data', (data) => {
 			core.debug(data.toString())
diff --git a/src/helpers.js b/src/helpers.js
index 325322e3..25e1a138 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -5,8 +5,8 @@ const execCmd = (command, args, cwd) => {
 	core.debug(`EXEC: "${ command } ${ args }" in ${ cwd || '.' }`)
 	return new Promise((resolve, reject) => {
 		const process = spawn(command, args, { cwd })
-		let stdout
-		let stderr
+		let stdout = ''
+		let stderr = ''
 
 		process.stdout.on('data', (data) => {
 			core.debug(data.toString())