Flexmonster server common issues

In this guide, you can find solutions to common issues that might occur with the Flexmonster server. See how to troubleshoot your issue if it is not listed here.

Issues with running the server

Error in logs: "Failed to bind to address http://[::]:<port_number>: address already in use."

This issue occurs when you attempt to run the Flexmonster server on a port used by another program.

To resolve this issue, do one of the following:

• Stop the program that uses the specified port.
• Run the Flexmonster server on a different port. See how to change the port.

Pop-up alert: "Server is unreachable"

This error appears when the Flexmonster Pivot service is not running. See how to start the service on different operating systems:

Issues with data sources

Error in logs: "Error occurred executing workItem."

This error is caused by an invalid or corrupted data source.

Ensure that data in the JSON/CSV file is valid and formatted in the way supported by the Flexmonster server. Learn more about supported formats:

• Supported JSON format
• Supported CSV format

Error in logs: "Data source <data_source_name> failed to reload."

This error occurs when a JSON/CSV file specified in the data source configuration cannot be found.

Ensure the file exists and the correct path to it is specified.

Issues with WSS configuration

Error in logs: "WSS configuration failed."

This issue might occur because of the following reasons:

• The certificate file cannot be found. Ensure the certificate file exists and the correct path to it is specified.
• The wrong password is specified. Ensure the certificate password is correct.
• The certificate is invalid. Check if the certificate is configured correctly.

Read about configuring a secure WebSocket connection.