Greasy Fork

The browser console prints error 400 when making the request 'https://read.amazon.co.jp/renderer/render?'.
If you modify the 'numPage' and set a low value, such as 4, then the script works.

The console prints this error, any idea what it could be? I am using Firefox browser with ViolentMonkey.

I cant reproduce the failed request with error code 500 on Firefox with ViolentMonkey, the script works totally fine sometimes but also buggy sometimes, I cant figure out where the problem is by the moment.

use Chrome or Edge instead might be helpful.

I just tested it with a 200 page book and it works correctly. Before I was trying a 455 page magazine and it didn't work.