Collect a useful Kodi debug log without sharing playlist credentials
Log one controlled reproduction, then inspect the file locally before sharing any excerpt with support.

Capture one short reproduction
Enable debug logging using Kodi’s system logging settings, note the time and reproduce the failure once. Write down what you selected and what Kodi displayed. A short session makes the relevant events easier to locate. Turn debug logging back off after reproducing the problem so the next viewing session does not produce unnecessary detail.
Read and clean the file before sending it
Kodi’s wiki lists log locations for different systems. Open the log locally and look for account names, device identifiers, portal addresses, playlist URLs and tokens. If you cannot verify that a complete file is safe to share, provide the relevant lines after masking private values. Include the Kodi and add-on versions, exact error and time. Never upload a raw log automatically from a player that handles your private subscriptions.