Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Microchip Technology/ATSAME51J19A/SDHC0/AESR#0x0
ERRST=STOP, LMIS=NO
ADMA Error Status
ADMA Error State
0 (STOP): ST_STOP (Stop DMA)
1 (FDS): ST_FDS (Fetch Descriptor)
3 (TFR): ST_TFR (Transfer Data)
ADMA Length Mismatch Error
0 (NO): No Error
1 (YES): Error
https://github.com/cmsis-svd/cmsis-svd-data