n8n - 💡(How to fix) Fix Connection Lost | Code 503

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503

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Connection lost few mins after workflow is trig

{ "nodes": [ { "parameters": { "promptType": "define", "text": "=Today is {{$today}}. Use this week’s information from:\n\n- Tool: n8n-semiconductor intelligence, \n- Tool: Finance info, and\n- QQQ/SPY price sub-workflow (last 5 trading days).\n\nThe current calendar week number is {{ $now.weekNumber }}.\n\n[Substack data for last 7 days from {{ $now.minus({ days: 7 }).toISO() }} till {{ $today.toISODate() }}] - TOOL (filter on "date" column of n8n-semiconductor)\n\n[QQQ and SPY price data] - TOOL (QQQ/SPY price)\n\nYour tasks:\n\n1. Market outlook and sentiment\n- In 2–4 sentences, describe the overall market outlook and sentiment for week {{ $now.weekNumber }} based only on the semiconductor intelligence data and the behaviour of QQQ and SPY.\n- Explicitly mention “week {{ $now.weekNumber }}”.\n- Quote the latest closing price of SPY and QQQ from the price data, exactly as:\n - SPY last close: <value from input>\n - QQQ last close: <value from input>\n\n2. Stock-by-stock summary\n- From the semiconductor intelligence data, extract a deduplicated list of stocks/tickers mentioned.\n- For each stock, output a short block with:\n - Name / ticker (as given in the input; if unclear, say “ticker not provided”).\n - Intelligence sentiment this week: label as bullish / bearish / mixed/neutral / not specified, and explain in 1–2 sentences using the Substack text.\n - 2–4 bullet points of key information from semiconductor intelligence (industrial insight, catalysts/risks, valuation comments, trading ideas, name of sender).\n - Current price, search for current price from Tool: Finance Info\n - Valuation view from intelligence (cheap / fair / expensive / not specified), using only what is written in the input.\n - Finance metrics from Perplexity (P/E, Forward P/E, PEG, P/S etc), search for financial metrics from Tool: Finance Info\n - Trading strategy / entry or exit levels only if they are explicitly in the input; otherwise say “no explicit levels provided in this week’s data”.\n - Watchlist (Add / Exist / Remove), go through Tool: Watchlist and advise your recommended action as per this weekly summary\n\nDo NOT:\n- Mention any tools or workflows in your answer.\n\n\nOutput format (Markdown):\n\n## Market outlook and sentiment\n\n[2–4 sentences]\n\n## Stock-by-stock summary\n\n### TICKER / Name\n- Substack sentiment: ...\n- Key information:\n - ...\n - ...\n- Current price:...\n- Valuation view from substack: ...\n- Finance Metrics from Perplexity:...\n- Trading strategy / entry/exit: ...\n- Watchlist: ...\n\n(Repeat the stock block for each stock.)\n", "options": { "systemMessage": "=You are an AI experienced equity analyst specialising in technology and growth stocks.\nYour task is to produce a concise, actionable weekly market and sector note for an informed investor.\n\nYou receive two structured inputs (as JSON):\n\nIndustrial intelligence from Tool: n8n-semiconductor for last 2 week.\n\nCurrent price and financial metrics from Tool: Finance Info\n\nQQQ and SPY prices for the last 5 trading days.\n\nUse only information present in these inputs.\nDo not fetch or assume any other data (except from Tool).\nIf something is missing, explicitly say that it is “not provided in the input” or search from Tool: Finance Info\n\nWrite as if you are sending a short weekly note." } }, "type": "@n8n/n8n-nodes-langchain.agent", "typeVersion": 2.2, "position": [ 592, -80 ], "id": "4548a43b-29b0-4a15-a2b5-b1d49689815a", "name": "AI Agent" }, { "parameters": { "sendTo": "[email protected]", "subject": "= CW{{ $now.weekNumber }}- Weekly Semiconductor Intelligence (Substack)", "message": "= CW{{ $now.weekNumber }} - {{ $json.data }}", "options": {} }, "type": "n8n-nodes-base.gmail", "typeVersion": 2.1, "position": [ 1136, -80 ], "id": "3bbca2bd-8a62-4f77-aff3-b91d95295676", "name": "Send a message", "webhookId": "87a82adb-4096-410d-9a73-f9e571245b89", "credentials": { "gmailOAuth2": { "id": "CiQMW7wfGrIPLZBh", "name": "Gmail account 2" } } }, { "parameters": { "mode": "markdownToHtml", "markdown": "={{ $json.output }}", "options": {} }, "type": "n8n-nodes-base.markdown", "typeVersion": 1, "position": [ 928, -80 ], "id": "9f913c42-f234-4b86-9436-45b3e14c750a", "name": "Markdown" }, { "parameters": { "rule": { "interval": [ { "field": "weeks", "triggerAtDay": [ 6 ], "triggerAtHour": 4 } ] } }, "type": "n8n-nodes-base.scheduleTrigger", "typeVersion": 1.2, "position": [ 320, -80 ], "id": "2ae779ef-1a1e-4af8-99df-92c8a02bed42", "name": "Schedule Trigger" }, { "parameters": { "workflowId": { "__rl": true, "value": "f288xVAVmTZ2OR4O", "mode": "list", "cachedResultUrl": "/workflow/f288xVAVmTZ2OR4O", "cachedResultName": "AI - Weekly Semiconductor Intelligence" }, "workflowInputs": { "mappingMode": "defineBelow", "value": {}, "matchingColumns": [], "schema": [], "attemptToConvertTypes": false, "convertFieldsToString": false } }, "type": "@n8n/n8n-nodes-langchain.toolWorkflow", "typeVersion": 2.2, "position": [ 656, 176 ], "id": "377cd4cc-e21e-4893-b65d-d758c3201549", "name": "QQQ/SPY price" }, { "parameters": { "options": {} }, "type": "n8n-nodes-base.dateTimeTool", "typeVersion": 2, "position": [ 928, 176 ], "id": "8dda3f0f-5a02-465e-9fbf-1b0bc5172ff6", "name": "Date & Time" }, { "parameters": { "model": "sonar-reasoning-pro", "messages": { "message": [ { "content": "=You are a financial analyst. Your job is to provide current price and finance metrics of all stocks mentioned to AI experienced equity analyst", "role": "system" }, { "content": "={{ /n8n-auto-generated-fromAI-override/ $fromAI('message1_Text', provide current price and finance metrics of all stocks mentioned, 'string') }}" } ] }, "options": {}, "requestOptions": {} }, "type": "n8n-nodes-base.perplexityTool", "typeVersion": 1, "position": [ 800, 176 ], "id": "5ca0ee49-512c-4fa9-806c-a6806b0c0b7e", "name": "Finance Info", "credentials": { "perplexityApi": { "id": "OOTATQcmtwV5zyE8", "name": "Perplexity account" } } }, { "parameters": { "documentId": { "__rl": true, "value": "1joHgJ08Kz6zMKHrhpo5_Y9mozyIYbTVc6mkdr6VItYc", "mode": "list", "cachedResultName": "n8n-AI-portifolio-manager", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1joHgJ08Kz6zMKHrhpo5_Y9mozyIYbTVc6mkdr6VItYc/edit?usp=drivesdk" }, "sheetName": { "__rl": true, "value": "gid=0", "mode": "list", "cachedResultName": "watchlist", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1joHgJ08Kz6zMKHrhpo5_Y9mozyIYbTVc6mkdr6VItYc/edit#gid=0" }, "options": {} }, "type": "n8n-nodes-base.googleSheetsTool", "typeVersion": 4.7, "position": [ 1040, 176 ], "id": "1640f6a6-8883-44f9-b6a5-b0157012f035", "name": "Watchlist", "credentials": { "googleSheetsOAuth2Api": { "id": "uXkM74HndDOKWXip", "name": "Google Sheets account 2" } } }, { "parameters": { "model": "grok-4.20-0309-reasoning", "options": {} }, "type": "@n8n/n8n-nodes-langchain.lmChatXAiGrok", "typeVersion": 1, "position": [ 400, 176 ], "id": "33cb0dde-d728-429d-96a6-049e51c595ac", "name": "xAI Grok Chat Model", "credentials": { "xAiApi": { "id": "d9Nu0JnSpIldbIfB", "name": "xAi account 2" } } }, { "parameters": { "descriptionType": "manual", "toolDescription": "=Get many rows in Supabase in date column from {{ $now.minus({ days: 7 }).toISO() }} till {{ $today.toISODate() }}", "operation": "getAll", "tableId": "n8n-semiconductor", "returnAll": true, "filterType": "none" }, "type": "n8n-nodes-base.supabaseTool", "typeVersion": 1, "position": [ 1216, 176 ], "id": "214fd8e8-67bd-44df-940d-790eb05821ba", "name": "n8n-semiconductor intelligence", "credentials": { "supabaseApi": { "id": "WU8u1Mf10su8BQoV", "name": "Supabase account" } } } ], "connections": { "AI Agent": { "main": [ [ { "node": "Markdown", "type": "main", "index": 0 } ] ] }, "Markdown": { "main": [ [ { "node": "Send a message", "type": "main", "index": 0 } ] ] }, "Schedule Trigger": { "main": [ [ { "node": "AI Agent", "type": "main", "index": 0 } ] ] }, "QQQ/SPY price": { "ai_tool": [ [ { "node": "AI Agent", "type": "ai_tool", "index": 0 } ] ] }, "Date & Time": { "ai_tool": [ [ { "node": "AI Agent", "type": "ai_tool", "index": 0 } ] ] }, "Finance Info": { "ai_tool": [ [ { "node": "AI Agent", "type": "ai_tool", "index": 0 } ] ] }, "Watchlist": { "ai_tool": [ [ { "node": "AI Agent", "type": "ai_tool", "index": 0 } ] ] }, "xAI Grok Chat Model": { "ai_languageModel": [ [ { "node": "AI Agent", "type": "ai_languageModel", "index": 0 } ] ] }, "n8n-semiconductor intelligence": { "ai_tool": [ [ { "node": "AI Agent", "type": "ai_tool", "index": 0 } ] ] } }, "pinData": {}, "meta": { "templateCredsSetupCompleted": true, "instanceId": "96fe93d885ff7b23db6a5122c54f791ea28283b7c238b2707877c641421fe806" } }

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)
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Debug info

core

• n8nVersion: 1.123.27
• platform: docker (cloud)
• nodeJsVersion: 24.13.1
• nodeEnv: production
• database: sqlite
• executionMode: regular
• concurrency: 5
• license: enterprise (sandbox)

storage

• success: all
• error: all
• progress: false
• manual: true
• binaryMode: filesystem

pruning

• enabled: true
• maxAge: 168 hours
• maxCount: 2500 executions

client

• userAgent: mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/147.0.0.0 safari/537.36
• isTouchDevice: false

Generated at: 2026-04-20T14:42:08.315Z}