Weird DNG export problem

Given: iPhone DNG photos inside Lightroom synced from Lightroom Mobile

Task: Exporting with Original + Settings options for offline archiving

The exported DNG is placed on a network drive. When trying to open the DNG file in Photoshop I get this error: Could not open “APC_2881-hdr.dng” because of a disk error. This happens to any DNG exported from Lightroom. No problems opening any other file from network drives. Also, when copying the DNG to local hard drive it opens as normal in Photoshop.

However I can import the said DNGs from network drive into Lightroom Classic, but the settings are not correct - all files are with a strong magenta shift.

Which all leads to me thinking that something is not right with DNG export from Lightroom.