{"record":{"id":"d2bb2237364d13be","repo":"zeroclaw-labs/zeroclaw","slug":"failed-to-download-flux-image-from-image-url","errorCode":null,"errorMessage":"Failed to download Flux image from {image_url}","messagePattern":"Failed to download Flux image from (.+?)","errorType":"exception","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"crates/zeroclaw-tools/src/linkedin_client.rs","lineNumber":1167,"sourceCode":"        let json: serde_json::Value = resp.json().await?;\n        let image_url = json\n            .pointer(\"/images/0/url\")\n            .and_then(|v| v.as_str())\n            .ok_or_else(|| {\n                ::zeroclaw_log::record!(\n                    ERROR,\n                    ::zeroclaw_log::Event::new(module_path!(), ::zeroclaw_log::Action::Fail)\n                        .with_outcome(::zeroclaw_log::EventOutcome::Failure)\n                        .with_attrs(::serde_json::json!({\"image_provider\": \"flux\"})),\n                    \"linkedin_client: Flux response missing image URL\"\n                );\n                anyhow::Error::msg(\"No image URL in Flux response\")\n            })?;\n\n        // Download the image from the returned URL\n        let img_resp = client.get(image_url).send().await?;\n        if !img_resp.status().is_success() {\n            anyhow::bail!(\"Failed to download Flux image from {image_url}\");\n        }\n        let bytes = img_resp.bytes().await?;\n        let path = output_dir.join(format!(\"{base_name}_flux.png\"));\n        tokio::fs::write(&path, &bytes).await?;\n        Ok(path)\n    }\n\n    // ── SVG Fallback Card ───────────────────────────────────────\n\n    /// Generate a branded SVG text card with the post title on a gradient background.\n    pub fn generate_fallback_card(title: &str, accent_color: &str) -> String {\n        // Truncate title to ~80 bytes for clean display without splitting UTF-8.\n        let display_title = if title.len() > 80 {\n            let end = crate::util_helpers::floor_char_boundary(title, 77);\n            format!(\"{}...\", &title[..end])\n        } else {\n            title.to_string()\n        };","sourceCodeStart":1149,"sourceCodeEnd":1185,"githubUrl":"https://github.com/zeroclaw-labs/zeroclaw/blob/88bb9c8533fc57ed7a03e36ca7c9ed2bf8336dcc/crates/zeroclaw-tools/src/linkedin_client.rs#L1149-L1185","documentation":"try_flux's generation request succeeded and returned an image URL, but the follow-up GET that downloads the bytes from /images/0/url came back non-success. The failure is the asset fetch, not generation: typically the signed URL expired, the CDN was unreachable, or an egress path allows the API host but not the image host.","triggerScenarios":"Delay between generation and download long enough for the signed URL to expire (4xx); CDN/network failure (5xx); proxy or firewall rules that permit the Flux API domain but block the image host.","commonSituations":"Saving URLs and downloading them later instead of immediately; corporate proxies with domain allowlists; slow networks causing the download to start after the URL's TTL.","solutions":["Regenerate (call generate again) to obtain a fresh signed URL — do not retry the stale one","Download immediately after generation and never persist the URL for later use","Check proxy/egress rules cover the image host, not just the API endpoint"],"exampleFix":"// before: reusing a saved URL\nlet img = client.get(saved_flux_url).send().await?;\n\n// after: re-generate to get a fresh signed URL\nlet path = match generator.generate(prompt).await {\n    Ok(p) => p,\n    Err(e) if e.to_string().contains(\"Failed to download Flux image\") => {\n        generator.generate(prompt).await? // fresh URL\n    }\n    Err(e) => return Err(e),\n};","handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"Catch errors containing 'Failed to download Flux image' and re-run generate() once to obtain a fresh signed URL; do not retry the stale URL — expiry makes it permanently invalid.","preventionTips":["Download immediately after generation; never persist Flux image URLs","Ensure egress rules cover the image CDN host, not just the API host","Keep another provider configured so a download failure can be bypassed by a provider that returns inline base64"],"tags":["flux","image-download","signed-url","network"],"backgroundTag":"image-download-failed","analyzedSha":"88bb9c8533fc57ed7a03e36ca7c9ed2bf8336dcc","analyzedAt":"2026-08-23T01:07:41.857Z","schemaVersion":2},"datasetVersion":"2026-08-23T08:06:27.607Z"}