One or more items failed to play in Kodi

I want to first off saying I did read the messages similar to my topic but did not see a resolution.

For a particular show for testing purposes, I was able to access the current episode but the prior episodes, I received the above message.

I am using a firestick, which I just recently purchased. I’ve cleared cache on firestick and within Kodi. I restarted Kodi. I updated to the current version.

Can anyone tell me what the issue could be?

I did check online for troubleshooting. It gave some steps within file manager but I have not been able to access file manager from the Home Screen of Kodi

File manager is in settings, in Kodi press the wheel symbol, and select the file manager,
Which addons have you got?