I am having some issues with my Gantry 5 framework. When I try to access to the Layout Manager, the option "Layout" appears empty, so I can not make any change in this section because of it. This is just happening in this option; the Styles, Page Settings and Assigments tabs work fine.
I am very worried because this is happening in different websites and they use differents templates (Callisto, Ambrosia, Interstellar...). Also, they are using different versions of Joomla and different languages.
I think there are something wrong with Gantry. The versions of Gantry 5 I am using are different too (5.4.10, 5.4.14, 5.4.2).
Could you please help me to figure out why is this happening? I add an attachment.
Thanks in advance.
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