Invalid JSON in tag 'schema' when trying to save liquid file

[lettersbyariann]

I am trying to add link to image in multicolumn on my website in shopify but this keeps coming up when I am creating a dynamic source and am trying to save it - Invalid JSON in tag 'schema'

I tried adding customisable text boxes before and think i messed something up but dont know what, any help?

I tried adding customisable text boxes to my products and think i messed something up in my liquid themes but dont know what, any help? does anyone know how to save image link and also add customisable text boxes for product (IE if people want a name on product they can put it in text box)