kraken2 2.1.9 empty taxonomic level field in k2report

[GODCALLMEGOD]

dear authors and devotees:
krakenreport given by kraken2-2.1.9 still needs to be added correct D, U and R. And I think the reason is the installation derection of wsl2, because there is no any question when I used kraken2 with wsl2 installed in C disk which is the system disk, however, recently I use kraken2 with wsl2 installed in USB(Portable storage device), it can't add correct D, U and R.
Thanks for your dedication, the words can't discribe your intelligence.

[GODCALLMEGOD]

well, I found a bigger problem, that's if my kraken2's report includes Pseudomonas sp. 2,4-D
, then there will be a proble, but I got confused, because my kraken2 database was pluspf(pre-build refdata), I checked the ktaxonomy.tsv and my kraken2 report, the decriptions of Pseudomonas sp. 2,4-D was identical, I couldn't find why just Pseudomonas sp. 2,4-D can lead to this error