sed: 1: "...": Invalid command code f

Question

grep -l \'texttofind\' * | xargs sed -i 's/toreplace/replacewith/g'

Im getting this error when I run the above command in the terminal.

sed: 1: "forkliftDailyChecklistW ...": invalid command code f

I've looked at several forums and have found nothing about code f. Any help/insight would be appreciated

Answer 1

I figured out what was wrong. I needed to add '' after the -i and before the 's/../../':

grep -l \'texttofind\' * | xargs sed -i '' 's/toreplace/replacewith/g'