I am seeing this also after upgrading one leg of my journey (inbound). However my outbound POUP offer has disappeared and no upgrades available anymore - do we think this error message will interrupt the delivery of other POUG offers or is it just another BA website gremlin?

Error message is:

• Internal Server Error Received from IAGL API ACCRUAL_CALCULATOR - getMilesAndPoints. Please Refer Response Code and Description for more details in server log.