Aww. Thanks for that. I guess that's what I get for buying the same old model of phone when my original one died. I wish I could find something else checks all the boxes of what I want in a phone though. (Marshmallow for Xposed, Removable battery and SD card, unlockable bootloader (or equivalent), etc.)
Who were you asking? If you meant that problem I reported, the steps to repro were to turn it on and wait. To fix, the steps were to either turn it off (if you can) or clear /data/ (which I did before I figured out what the cause was, and which effectively turned it off.)
I posted about it to try and warn people and to try and get a fix into the ROM, but I guess the latter isn't going to happen.
If you think the problem is occuring due to a missing sound file, it possibly could be fixed by putting the appropriate sound file in the appropriate folder in the ROM. Heck, even if we don't have the original sound file, we could just rename any sound file to the name of the "expected" file by the ROM and then the problem would be gone. But in order to fix such a problem, you probably need Logcat, and even then you will need to read quite a bit of info in the Logcat window. The file would possibly have .mp3 or .ogg as its extension, so that might be a clue when browsing through the log...