when trying to upload within Arduino's IDE (OS Linux Suse) I get this error: "LittleFS Error: mklittlefs not found!" , also under the directory .arduino15\packages\esp8266\tools\ I think there should be a directory named "mklittlefs" because if I downgrade the package to 2.7.4 it appears, if I re-upgrade to 3.0.0 disappears.
And, If I roll back to previous version it works. Any clue ?
Cheers.