nil error during searching in upload-bin command

[AliceInHunterland]

Is your feature request related to a problem? Please describe.

Got a strange error.

(base) ekaterinapavlova@MacBook-Air-4 neo-go %  ./bin/neo-go util upload-bin --cid VCVr6RKg1hfJR7v36xvjbaXTncj1waPi94u9EFyEttW --wallet-config ./wallet-config.yml --block-attribute Block --index-at
tribute Index --rpc-endpoint https://rpc1.morph.fs.neo.org:40341 --fs-rpc-endpoint st3.storage.fs.neo.org:8080 --fs-rpc-endpoint st1.storage.fs.neo.org:8080 --fs-rpc-endpoint st2.storage.fs.neo.org
:8080 --fs-rpc-endpoint st4.storage.fs.neo.org:8080 --timeout 3m --skip-blocks-uploading --index-file-size 2560000

Chain block height: 6611697
failed to fetch the oldest missing block index from container: %!w(<nil>)

Describe the solution you'd like

Get normal error