Looks like your trash hidden folder is full of shit and/or temporary files flders are full of shit.

Try to unveil the hidden folders (Total Commander may help) and delete them.

Folders like

TRASH-1000.

System Volume Information

can be the cause

Also

all TEMP and tmp folders or files can be deleted.

Good luck!
1A78Q8QBowqBBd887jhZ2wtfSSAQ4a7yxt - if it helps.