Data Connectors
Data Connectors Error Log
A document of potential errors when connecting data sources to Julius, with context and suggested resolutions.
Please note: If you’re running into an error that isn’t on this document yet, reach out to us at team@julius.ai.
Postgres Errors:
| Error Message | Error Code | Root Cause | Fix |
|---|---|---|---|
Initializing connection. Internal service error while intializing the connector. Please retry. | 5432 | Password authetication failure. | Correct Password and retry |
Error initializing connector: ['Failed to initialize connector: {"error":"Error executing connector init code: could not translate host name \\<URL>\\ to address: Name or service not known\n","message":"Connector initialization failed"}'] | 3001 | Connection failed | Correct Host and retry |
Initializing connection. Connection test was cancelled. | 54321 | Network: Cannot reach the server | Check ssl/firewall and retry |
Error initializing connector: ['Failed to initialize connector: {"error":"Error executing connector init code: connection to server at \"localhost\" (127.0.0.1), port 5432 failed | 5432 | Network: Cannot reach the server | Use a real hostname(not localhost) and retry |
Error: Unrecognized configuration parameter | n/a | PostgreSQL: Connection failed | Incompatible postgres versions, ensure you are actually connecting to postgres |
{"error": "Error initializing connector: [\"Error connecting to Porcupine: HTTPConnectionPool(host='localhost', port=54321): Read timed out. | 54321 | Network: Cannot reach the server | Check ssl/firewall and retry |
Error initializing connector: ['Failed to initialize connector: {"error":"Error executing connector init code: connection to server at \"<IP>\", port <PORT> failed: server closed the connection unexpectedly | 1433 | Database: Connection failed | Check why database keeps failing |
Error initializing connector: ['Failed to initialize connector: {"error":"Error executing connector init code: connection to server at \"<HOST>\" (<IP>), port 5432 failed: error received from server in SCRAM exchange: Wrong password\n","message":"Connector initialization failed"}'] | 5432 | Connection failed | Correct Password |
Connection test failed. Please check your credentials and permissions. | n/a | not identified yet | Check ssl/firewall and retry |
Invalid request - missing required fields, | n/a | Improper fields | Check input fields, ensure all fields are filled out, and retry |
Error:[DATA_CONNECTOR_STREAMING_ENABLE_CONNECTOR_EXCEPTION] Exception in streaming enable: 424 GET | 424 | Your sandbox is currently unavailable. Please try again in a few moments or restart your sandbox. | Restart your sandbox and try again |
BigQuery Errors:
| Error Message | Error Code | Root Cause | Fix |
|---|---|---|---|
Extra data: line 1 column 7 (char 6) | n/a | Malformed input | Double check input service-account-json and fix malformed errors |
Error initializing connector: ['Failed to initialize connector: {"error":"Error executing connector init code: Expecting value: line 1 column 1 (char 0)","message":"Connector initialization failed"}'] | n/a | Connection failed | Double check input service-account-json and fix malformed errors |
BigQuery Error: 403 Access Denied: Table <REGION>.INFORMATION_SCHEMA.TABLES: User does not have permission to query table | 403 | BigQuery: Insufficient permissions | Lacking permissions to query your tables, please grant proper permissions and retry |
Connection test failed: Connection test failed | GA4 | Connection failed | unknown |
Snowflake Errors:
| Error Message | Error Code | Root Cause | Fix |
|---|---|---|---|
Exception during connection test: Error initializing connector: ['250001 (08001): Failed to connect to DB. Contact your account administrator | 250001 | Our IP is not whitelisted | Whitelisting failed, please see docs here: https://docs.snowflake.com/en/user-guide/client-connectivity-troubleshooting/error-messages Make sure the Julius IP is whitelisted |
An unknown error occurred during the connection test | n/a | Too much data being sent at once | Connect to smaller data sources |
No Active Warehouse selected on snowflake | n/a | No Active Warehouse selected on snowflake | Select active warehouse on Snowflake |
Connection test failed. Please check your credentials and permissions. | 250003 | Snowflake Account not found | Correct snowflake host and username and retry |
Connection test failed. Please check your credentials and permissions. | 250001 | Could be many things, usually ssl/firewall issues | See docs here: https://docs.snowflake.com/en/user-guide/client-connectivity-troubleshooting/error-messages. Check your ssl and security configuration/firewall then retry |
Supabase Errors:
| Error Message | Error Code | Root Cause | Fix |
|---|---|---|---|
Connection Pooler Required /Not Found | n/a | Connection failed | Check username and password |
Error initializing connector: ['Failed to initialize connector: {"error":"Error executing connector init code: connection to server at \"<URL>\" (<IP>), port 5432 failed: SSL connection has been closed unexpectedly\n","message":"Connector initialization failed"}'] | 5432 | Security: SSL certificate error | SSL issue or database instability |
Error initializing connector: ['Failed to initialize connector: {"error":"Error executing connector init code: connection to server at \"<URL>o\" (<IP>), port 5432 failed: FATAL: password authentication failed for user | 5432 | PostgreSQL: Invalid username or password | Fix username or password |
MCP Errors:
| Error Message | Error Code | Root Cause | Fix |
|---|---|---|---|
Connection test failed. Please check your credentials and permissions. | 401 | unknown | Unauthorized for MCP, delete and recreate MCP with the correct information |