Error with rpsblast+

[rajaldebnath]

Dear Aleimba,

I tried running the following command with the respective error message.

rpsblast+ -query protein.faa -db ../../COG/cog_LE_db/ -evalue 0.00001 -outfmt "6 qseqid sseqid evalue pident score qstart qend sstart send length slen" -out cog_blast_output.out

BLAST Database error: No alias or index file found for protein database [../../COG/cog_LE_db/] in search path [/home/rajal/Downloads/prokka/prokka_annotation:/var/lib/blastdb::]

I am using rpsblast+ version [Reverse Position Specific BLAST 2.2.28+]. What am I missing here?

Thank you.