unable to write to pi

hi, went through the tutorial using balenaetcher (as previous setup failed at update) and set up SSH, update failed again because it could not write to the pi?

specific - “failed to fetch” (address)
"error writing to output file - write (28: no space left on device)

this is a brand new sandisk 16Gb should be more than enough? am thinking it is a setting in ssh that wont allow me to write from my mac