Version

Version 1.55.0

Steps to reproduce

Describe the bug
When using page.wait_for_timeout(), the call fails with a vika.exceptions.ServerError (500), even though no explicit Vika API calls are made in the code at that moment.

Vika is only used in event handlers for:

• self.page.on("console", self.handle_console)
• self.page.on('response', self.handle_response)
• self.page.on("pageerror", self.handle_page_error)

To Reproduce
Steps to reproduce the behavior:

1. Set up Playwright page with Vika event handlers
2. Call page.wait_for_timeout()
3. Observe the unexpected Vika server error

Error Frequency

• The issue occurs sporadically (~1% of cases based on our observations)
• Most wait_for_timeout() calls complete successfully
• No clear pattern to the failures

Manual System Check Results:

• No high CPU usage (via top observation)
• Adequate free memory (visible in free -h)
• Disk space sufficient (confirmed by df -h)
• No abnormal process activity

Error Traceback
Traceback (most recent call last):
File "/home/webui/webui-new/baidu/bpitqa/be-webui/webui/visualization/case/ExecuteCase.py", line 101, in test_case
exec(result, globals(), locals())
File "", line 26, in
File "/home/webui/webui-new/baidu/bpitqa/be-webui/webui/common/PlayPage.py", line 1372, in sleep
self.page.wait_for_timeout(sleep_time * 1000)
File "/home/webui/miniconda3/envs/py3.11.8/lib/python3.11/site-packages/playwright/sync_api/_generated.py", line 11496, in wait_for_timeout
self._sync(self._impl_obj.wait_for_timeout(timeout=timeout))
File "/home/webui/miniconda3/envs/py3.11.8/lib/python3.11/site-packages/playwright/_impl/_sync_base.py", line 115, in _sync
return task.result()
^^^^^^^^^^^^^
File "/home/webui/miniconda3/envs/py3.11.8/lib/python3.11/site-packages/playwright/_impl/_page.py", line 1104, in wait_for_timeout
await self._main_frame.wait_for_timeout(timeout)
File "/home/webui/miniconda3/envs/py3.11.8/lib/python3.11/site-packages/playwright/_impl/_frame.py", line 844, in wait_for_timeout
await self._channel.send("waitForTimeout", None, {"waitTimeout": timeout})
File "/home/webui/miniconda3/envs/py3.11.8/lib/python3.11/site-packages/playwright/_impl/_connection.py", line 69, in send
return await self._connection.wrap_api_call(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/webui/miniconda3/envs/py3.11.8/lib/python3.11/site-packages/playwright/_impl/_connection.py", line 558, in wrap_api_call
raise rewrite_error(error, f"{parsed_st['apiName']}: {error}") from None
vika.exceptions.ServerError: Page.wait_for_timeout: API Server Error: 500

Expected behavior

page.wait_for_timeout()` should work normally without raising Vika-related exceptions, as it's a local timing operation.

Actual behavior

Getting vika.exceptions.ServerError: Page.wait_for_timeout: API Server Error: 500

Additional context

No response

Environment

- Operating System: [Ubuntu 22.04]
- CPU: [amd64]
- Browser: [Chromium]
- Python Version: [3.11.8]
- Playwright version: 1.55
- Vika version:  1.3.1