Missing value of required parameter ‘to’

hi guys,

my problem is :

have a google sheet where is listed all tools of my clients, these tools required calibration every year. My goal here is to send an email to client who need to re calibrate his tool.

below my testing file

so you will find : A- company D-Name of contact E-mail of contact F-last calibration date

to begin i’ve made a filter :

and i want send automatically an email but Make don’t find mail adress and provide error : Missing value of required parameter ‘to’

here parameters i’ve put :

may you help me on it because i don’t understand where is the error

thx and have a nice day
Clement