openclaw - 💡(How to fix) Fix [Bug]: EmbeddedAttemptSessionTakeoverError: session file changed while embedded prompt lock was released (Telegram channel)

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Version: OpenClaw 2026.5.18 (50a2481) OS: Ubuntu 24.04 LTS on WSL2 (Windows 11) Channel: Telegram Bot API Model: google/gemini-2.5-flash

Bug: Bot consistently fails to reply to Telegram messages with error: "EmbeddedAttemptSessionTakeoverError: session file changed while embedded prompt lock was released"

Error in logs: Embedded agent failed before reply: session file changed while embedded prompt lock was released: ~/.openclaw/agents/main/sessions/<uuid>.jsonl

Attempted fixes (all failed):

  • rm -rf ~/.openclaw/agents/main/sessions/*
  • hooks.internal.enabled = false
  • session.dmScope = per-channel-peer
  • gateway restart

Error Message

Bot consistently fails to reply to Telegram messages with error: Error in logs: 5. Send any regular message → bot replies with error:

Root Cause

Version: OpenClaw 2026.5.18 (50a2481) OS: Ubuntu 24.04 LTS on WSL2 (Windows 11) Channel: Telegram Bot API Model: google/gemini-2.5-flash

Bug: Bot consistently fails to reply to Telegram messages with error: "EmbeddedAttemptSessionTakeoverError: session file changed while embedded prompt lock was released"

Error in logs: Embedded agent failed before reply: session file changed while embedded prompt lock was released: ~/.openclaw/agents/main/sessions/<uuid>.jsonl

Attempted fixes (all failed):

  • rm -rf ~/.openclaw/agents/main/sessions/*
  • hooks.internal.enabled = false
  • session.dmScope = per-channel-peer
  • gateway restart
RAW_BUFFERClick to expand / collapse

Bug type

Regression (worked before, now fails)

Beta release blocker

No

Summary

Version: OpenClaw 2026.5.18 (50a2481) OS: Ubuntu 24.04 LTS on WSL2 (Windows 11) Channel: Telegram Bot API Model: google/gemini-2.5-flash

Bug: Bot consistently fails to reply to Telegram messages with error: "EmbeddedAttemptSessionTakeoverError: session file changed while embedded prompt lock was released"

Error in logs: Embedded agent failed before reply: session file changed while embedded prompt lock was released: ~/.openclaw/agents/main/sessions/<uuid>.jsonl

Attempted fixes (all failed):

  • rm -rf ~/.openclaw/agents/main/sessions/*
  • hooks.internal.enabled = false
  • session.dmScope = per-channel-peer
  • gateway restart

Steps to reproduce

  1. Fresh install OpenClaw 2026.5.18 on WSL2 Ubuntu 24.04
  2. Configure Telegram channel with dmPolicy=allowlist
  3. Start gateway: openclaw gateway start
  4. Send /new via Telegram → responds OK
  5. Send any regular message → bot replies with error: "⚠️ Something went wrong while processing your request"

Expected behavior

Bot replies to Telegram messages normally

Actual behavior

Every message triggers EmbeddedAttemptSessionTakeoverError

OpenClaw version

OpenClaw 2026.5.18 (50a2481

Operating system

Ubuntu 24.04 LTS on WSL2 (Windows 11)

Install method

No response

Model

google/gemini-2.5-flash

Provider / routing chain

Google Gemini (google/gemini-2.5-flash) via OpenClaw built-in provider

Additional provider/model setup details

No response

Logs, screenshots, and evidence

Impact and severity

No response

Additional information

No response

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FAQ

Expected behavior

Bot replies to Telegram messages normally

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