base64 changes

src/ops/index.js

@@ -603,7 +603,7 @@ export const write_base64_file = async (
     response.decode_ui32(); // Service flags
 
     const result = response.decode_i32();
-    if (result === buffer.length) {
+    if (result > 0) {
       return result;
     }
     return Promise.reject(new Error(`'write_base64_file' error: ${result}`));