Extensions 45 topics

I am confused on something and hoping you can clarify things. Please see this video for a visual example: https://screenrec.com/share/Xbw03sSjhc

I migrated about a thousand items with attachments from K2 using your tool and attachments plugin. I initially did this on a test account. Everything worked fine over there. The migrated article attachments worked fine. Then I backed it all up and moved it to my live domain. Now none of the attachments load. All I get is Exception File Not Found and I can't figure out where to look. Turning on error reporting and debug don't tell me anything. I am guessing the old files were not moved during the migration correct? Or how does that all work? I still have all the original folders in the original places as far as I can tell.

Release Embed iFrame v1.2.2 - Compatible with J6.

Release CountryBlocker v1.2.4 - Compatible with J6.

The component managed to convert the K2 items to articles, but when clicking on an article in the backend this error pops up:

An error has occurred. 0 implode(): Argument #2 ($array) must be of type ?array, string given

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Any idea what's causing this?

Release File Manager v1.3.3 - Compatible with J6.