Help please (809469)

Scripting Visual Scripting
1

Hi so im getting this error with my code and i dont know why. Im using bolt(yeah yeah judge me)

6331065--702603--upload_2020-9-20_14-22-26.png

2

Im also having trouble finding the setting to fix this error, does anyone know where the setting is?
6331104--702609--upload_2020-9-20_14-31-48.png