Errors

This page contains a list of errors we have seen.

Database

Error	Component	Probable cause
Unexpected response from server during a HTTP connection: Could not refill buffer.	Databricks	SSL Option is not selected in odbc settings
Driver not found		This error can happen when using an ODBC driver like snowflake, databricks, teradata on linux systems. It indicates there is probably a problem in the installation of the php dependency of WriteBackExtreme that has been compromised. Run `php -m` command to check what version you are on and run the install.sh again.

SSO

Undefined array key "sp_entity_id"

SSO provider does not send the relayState in their response to the return url.

Startup

Service Error: stop: Failed to stop WriteBackExtreme PHP App Server: The specified service does not exist as an installed service.

When there is an unexpected shutdown of the system, it occasionally happens that Windows removes the WriteBackExtreme service from Windows Services. Upon startup WriteBackExtreme tries to startup the service that is not there anymore.

Steps to resolve this

1. Start WriteBackExtreme manually as an administrator.

2. Go to configuration

3. Toggle the switch 'Initiate upon startup using a background service' off and on again

4. Click Start WriteBackExtreme

5. Open Windows services and verify WriteBackExtreme is listed again.

Failed to extract PHP:open C:\[path]\.wbe-runtime\php\ext/[filename].dll: The process cannot access the file because it is being used by another process.

This typically happens when the system or application experienced an unexpected shutdown. Our application tries to remove the .wbe-runtime/php directory but it was not successful due to a dangling php processes that could not be killed properly. Upon startup it will not be able to start properly due to missing files in the php directory.

Similar error messages

• No valid json: In Connection.php line 822: could not find Driver

• openssl signature could not be verified: openssl not loaded

• Error while stopping: open C:\[path]\.wbe-runtime\php-appserver.pid: The system cannot find the file specified

Steps to resolve this

1. Start the application manually

2. Stop the application properly (this will remove the php directory)

3. Start application again. (this will reinstall the php directory again)