We are using SFTP connector. The connections are fine and were working.
Suddenly the If Expection block started catching the below error.
<Integration_Operation__c>Dell Boomi Inbound Process</Integration_Operation__c>
<Log_Message__c>Failed to establish SFTP Channel. session is down; Caused by: session is down</Log_Message__c>
What type of error is this? It does not look like Authorization issue? Is it an SSH issue or multiple sessions issue?