when I try to edit any Gantry5 setting which should be opened in modal it causes an error.
e.g., I want to add javascript in Gantry5 -> Global Page Settings -> Assets -> Javascript -> + (or edit existing by pressing button with modal link http://mysite/admin/gantry/configurations/default/page/assets/javascript/0?nonce=7fdb388bc6150675040ee00595ecf506)
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0 - Cannot unset string offsets
when I try to edit any Gantry5 setting which should be opened in modal it causes an error. e.g., I want to add javascript in
Gantry5 -> Global Page Settings -> Assets -> Javascript -> +
(or edit existing by pressing button with modal linkhttp://mysite/admin/gantry/configurations/default/page/assets/javascript/0?nonce=7fdb388bc6150675040ee00595ecf506
)