If you are updating structure fields from the frontend using Kirby Uniform, content will be nested, e. g. <input name="structure[field][]" />. Therefore, the second level of the data array will also be an array. Currently, the form handler expects this to be a string and throws an error.
If you are updating structure fields from the frontend using Kirby Uniform, content will be nested, e. g.
<input name="structure[field][]" />
. Therefore, the second level of the data array will also be an array. Currently, the form handler expects this to be a string and throws an error.