diff --git a/extensions/html/server/src/modes/pathCompletion.ts b/extensions/html/server/src/modes/pathCompletion.ts
index 8c384bfc95a..9e1c659cad2 100644
--- a/extensions/html/server/src/modes/pathCompletion.ts
+++ b/extensions/html/server/src/modes/pathCompletion.ts
@@ -64,12 +64,17 @@ export function providePathSuggestions(value: string, activeDocFsPath: string, r
 		return [];
 	}
 
-	const valueAfterLastSlash = value.slice(value.lastIndexOf('/') + 1);
-	const valueBeforeLastSlash = value.slice(0, value.lastIndexOf('/') + 1);
+	const lastIndexOfSlash = value.lastIndexOf('/');
+	const valueAfterLastSlash = value.slice(lastIndexOfSlash + 1);
+	const valueBeforeLastSlash = value.slice(0, lastIndexOfSlash + 1);
 	const parentDir = startsWith(value, '/')
 		? path.resolve(root, '.' + valueBeforeLastSlash)
 		: path.resolve(activeDocFsPath, '..', valueBeforeLastSlash);
 
+	if (!fs.existsSync(parentDir)) {
+		return [];
+	}
+
 	return fs.readdirSync(parentDir).map(f => {
 		return {
 			label: f,
diff --git a/extensions/html/server/test/mocha.opts b/extensions/html/server/test/mocha.opts
index 559e72667aa..97e8b723ae2 100644
--- a/extensions/html/server/test/mocha.opts
+++ b/extensions/html/server/test/mocha.opts
@@ -1,4 +1,3 @@
 --ui tdd
 --useColors true
-./out/test
-./out/test/pathCompletion
\ No newline at end of file
+./out/test
\ No newline at end of file
diff --git a/extensions/html/server/tsconfig.json b/extensions/html/server/tsconfig.json
index d965b4c85d1..a4a5a507ac0 100644
--- a/extensions/html/server/tsconfig.json
+++ b/extensions/html/server/tsconfig.json
@@ -6,7 +6,7 @@
 		"noUnusedLocals": true,
 		"sourceMap": true,
 		"lib": [
-			"es5", "es2015.promise", "dom"
+			"es5", "es2015.promise"
 		]
 	}
 }
\ No newline at end of file