Agent - No response returned due to error _(no response (stop reason: error))_

[rapcmia]

Describe the bug

Agent does not return any response but only (no response (stop reason: error)), i've listed one of possible reasons and we are still investigating this issue:

When the host is under heavy memory pressure and background processes are being throttled

2026-04-07 12:21:24,935 - handlers.agents.stream - WARNING - Empty agent response for chat 1474408604 — stop_reason=error, tools_ran=0, buffer_len=0

• Remote server specs is 6 vCPUs, 11GB of ram and 100GB ofstorage
• The remote server has been running condor, hummingbot-api and active agent builder session with 2 active trading agents
• Observed that at the same time, hummingbot-api is not able to start due to memory has no space left

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Will be adding more scenarios here to reproduce this behavior

Steps to reproduce

1. Setup condor + hummingbot-api using make install on your remote server
2. Start /agent and select claude using agent builder
3. Setup your strategy with agent builder and deploy it.
   • Depends how many you would want to, my case it was 2
4. Monitor your remote server using htop and check mem usage

Attach required files

n/a