diff --git a/package.json b/package.json
index ec088828d..eeb8f88e1 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "build": "rm -rf lib && npx tsc -b && npm run buildAndCopyWeb && npm run copy-files",
     "bundle": "npm run build && webpack",
     "build-web-and-plugin": "npx tsc -b && npm run buildAndCopyWeb && npm run copy-files",
-    "copy-files": "cp -R src/public lib",
+    "copy-files": "(cp -R src/public lib || exit 0)",
     "buildAndCopyWeb": "sh buildAndCopyWeb.sh",
     "prepublishOnly": "npx tsc && npm run buildAndCopyWeb && npm run copy-files && npm run bundle",
     "lint": "eslint . --ext .ts,.tsx --fix",