Hi, the only way I’ve found to get rid of that error is to delete the row for that participant in the csv file from Qualtrics. Then the parser should run fine. The error code tells you it is Subject: R_25axj0v0k, which should be listed in one of the first columns. So delete that row and try again.
Unfortunately, that means losing that one participant – but it suggests that something went wrong while they were completing the experiment.