error on chromium about whalesong HOT 2 OPEN

Please provider the steps to reproduce and explanation for the error.

from whalesong.

[root@vps180388 whalesong]# PYTHONPATH=.:$PYTHONPATH python3 examples/minibot-chromium.py
Traceback (most recent call last):
File "examples/minibot-chromium.py", line 240, in
bot.loop.run_until_complete(bot.start())
File "/usr/lib64/python3.6/asyncio/base_events.py", line 484, in run_until_complete
return future.result()
File "examples/minibot-chromium.py", line 227, in start
await self._driver.start()
File "/home/whatsapp/whalesong/whalesong/init.py", line 96, in start
await self._driver.connect()
File "/home/whatsapp/whalesong/whalesong/driver_chromium.py", line 83, in connect
await self.refresh()
File "/home/whatsapp/whalesong/whalesong/driver_chromium.py", line 91, in refresh
await self.run_scriptlet()
File "/home/whatsapp/whalesong/whalesong/driver.py", line 69, in run_scriptlet
await self._internal_run_scriptlet(script.read())
File "/home/whatsapp/whalesong/whalesong/driver_chromium.py", line 95, in _internal_run_scriptlet
await self.page.evaluate(script)
File "/usr/local/lib/python3.6/site-packages/pyppeteer/page.py", line 1158, in evaluate
return await frame.evaluate(pageFunction, *args, force_expr=force_expr)
File "/usr/local/lib/python3.6/site-packages/pyppeteer/frame_manager.py", line 295, in evaluate
pageFunction, *args, force_expr=force_expr)
File "/usr/local/lib/python3.6/site-packages/pyppeteer/execution_context.py", line 55, in evaluate
pageFunction, *args, force_expr=force_expr)
File "/usr/local/lib/python3.6/site-packages/pyppeteer/execution_context.py", line 95, in evaluateHandle
helper.getExceptionMessage(exceptionDetails)))
pyppeteer.errors.ElementHandleError: Evaluation failed: ReferenceError: webpackJsonp is not defined
at createManagers (pyppeteer_evaluation_script:1:130627)
at Object. (pyppeteer_evaluation_script:1:102948)
at webpack_require (pyppeteer_evaluation_script:1:128)
at pyppeteer_evaluation_script:1:1200
at pyppeteer_evaluation_script:1:1246

from whalesong.