diff --git a/js_api_module/uri/src/js_uri.ts b/js_api_module/uri/src/js_uri.ts
index 68dc2ba7634a6479670a79488f3118c132314c14..819335f23378a321dd92aacfa1f5144236c69032 100644
--- a/js_api_module/uri/src/js_uri.ts
+++ b/js_api_module/uri/src/js_uri.ts
@@ -78,7 +78,7 @@ class URI {
 
   static createFromParts(scheme: string, ssp: string, fragment: string): URI {
     if (scheme === null || typeof scheme !== 'string') {
-      throw new BusinessError(`Parameter error. The type of ${scheme} must be string`);
+      throw new BusinessError(`Parameter error. The type of ${scheme} must be string `);
     }
     if (ssp === null || typeof ssp !== 'string') {
       throw new BusinessError(`Parameter error. The type of ${ssp} must be string`);