{"record":{"id":"4473cc73b9d299c7","repo":"tinyhumansai/openhuman","slug":"browser-backend-computer-use-but-sidecar-endpoin","errorCode":null,"errorMessage":"browser.backend='computer_use' but sidecar endpoint is unreachable. Check browser.computer_use.endpoint and sidecar status","messagePattern":"browser\\.backend='computer_use' but sidecar endpoint is unreachable\\. Check browser\\.computer_use\\.endpoint and sidecar status","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"src/openhuman/tools/impl/browser/browser.rs","lineNumber":235,"sourceCode":"                    )\n                }\n            }\n            BrowserBackendKind::RustNative => {\n                if !Self::rust_native_compiled() {\n                    anyhow::bail!(\n                        \"browser.backend='rust_native' requires build feature 'browser-native'\"\n                    );\n                }\n                if !self.rust_native_available() {\n                    anyhow::bail!(\n                        \"Rust-native browser backend is enabled but WebDriver endpoint is unreachable. Set browser.native_webdriver_url and start a compatible driver\"\n                    );\n                }\n                Ok(ResolvedBackend::RustNative)\n            }\n            BrowserBackendKind::ComputerUse => {\n                if !self.computer_use_available()? {\n                    anyhow::bail!(\n                        \"browser.backend='computer_use' but sidecar endpoint is unreachable. Check browser.computer_use.endpoint and sidecar status\"\n                    );\n                }\n                Ok(ResolvedBackend::ComputerUse)\n            }\n            BrowserBackendKind::Auto => {\n                if Self::rust_native_compiled() && self.rust_native_available() {\n                    return Ok(ResolvedBackend::RustNative);\n                }\n                if Self::is_playwright_available().await {\n                    return Ok(ResolvedBackend::Playwright);\n                }\n                if Self::is_agent_browser_available().await {\n                    return Ok(ResolvedBackend::AgentBrowser);\n                }\n\n                let computer_use_err = match self.computer_use_available() {\n                    Ok(true) => return Ok(ResolvedBackend::ComputerUse),","sourceCodeStart":217,"sourceCodeEnd":253,"githubUrl":"https://github.com/tinyhumansai/openhuman/blob/749120085864ce16e0f273c7b86fac7740b39c5b/src/openhuman/tools/impl/browser/browser.rs#L217-L253","documentation":"The computer_use backend was explicitly selected but its sidecar HTTP endpoint failed the 500ms reachability probe. Configuration parsed fine; the sidecar process is down or the endpoint address is wrong.","triggerScenarios":"Thrown at src/openhuman/tools/impl/browser/browser.rs:235 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Start the computer-use sidecar process.","Verify browser.computer_use.endpoint matches the sidecar's actual address/port.","Check sidecar logs for startup failure."],"exampleFix":null,"handlingStrategy":"fallback","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"749120085864ce16e0f273c7b86fac7740b39c5b","analyzedAt":"2026-08-17T21:21:45.363Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}