Error While Placing Symbols in OPPID

Hi,

I am getting this error when trying to place any symbol from the P&ID library and I'm not sure what is causing the problem.  When I place a symbol only the text annotation appears but not the actual symbol.

In the Message Center, I get this:

6-25-21 11:17:44 LOG_ERROR - Bentley.Plant.ModelingFramework.PersistenceManager - Exception : CommitChangeSet has fatally terminated before commiting all instances because of the following exception: TryGetElementInfo failed to get ElementRef for ECInstance with instanceId of: DGNEC::153e060000::ECXA::1
TryGetElementInfo failed to get ElementRef for ECInstance with instanceId of: DGNEC::153e060000::ECXA::1
Stack Trace : \n at Bentley.EC.Persistence.PersistenceServiceInProcess.CommitChangeSet(RepositoryConnection connection, ChangeSet changeSet, String comments, WriteModifiers writeModifiers, IList`1 preCommitSequence, IList`1 postCommitSequence, BatchExecutionController`1 batchExecutionController, IExtendedParameters extendedParameters) at Bentley.EC.Persistence.PersistenceService.CommitChangeSet(RepositoryConnection connection, ChangeSet changeSet, IExtendedParameters extendedParameters) at Bentley.Plant.ModelingFramework.Persistence.PersistenceManager.CommitTransaction()

The instanceId of: DGNEC::153e060000::ECXA::1 is the ID of the drawing.

Any ideas what is causing the problem and is there a solution for it?

Thanks,

Justin