Critical GetSessionDataAction errors

Does anyone know what would cause these random critical errors I get in my logs occasionally? If it helps, I use the SAML module. Is it something in my design or likely just a “hiccup”  [APP/PROC/WEB/0]  CRITICAL - ActionManager: Error in execution of monitored action 'GetSessionDataAction' (execution id: 1631704079532-1, execution type: CLIENT) [APP/PROC/WEB/0]  CRITICAL - ActionManager: java.lang.StackOverflowError: null
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