Invalid backend configuration

Hi, I can’t make your plugin work. No matter what path I use, always have the same error message: Invalid backend configuration.
Readable volumes not available.

>>>>>>>>>>>Below is the current shortcode I am testing:
[file_manager_advanced login=”no” roles=”all” path=”wp-content/uploads/simple-file-list/MrCADPRO” hide=”plugins” path_type=”inside” operations=”info,download,help” view=”grid” theme=”light”]

>>>>>>>>>>>The page I am using your shortcode:
https://ingeomatics.com/a0-test-page/

>>>>>>>>>>>Report for that folder:
MrCADPRO
Carpeta
Tama?o : 817.77 MB
Carpetas: 6, Archivos: 31
Ruta : ingeomatics/wp-content/uploads/simple-file-list/MrCADPRO
Enlace : MrCADPRO
Modificado : Abr 09, 2020 07:20 AM
Permisos : lectura y escritura
Bloqueado : no

>>>>>>>>>>>>>Settings:
I ma using default values for all

Theme
Select file manager advanced theme. Default: Light

Language
Select file manager advanced language. Default: en (English)

Public Root Path
/home1/mrcadsit/public_html/ingeomatics/
File Manager Advanced Root Path, you can change according to your choice.

Default: /home1/mrcadsit/public_html/ingeomatics/

Files URL
https://ingeomatics.com
File Manager Advanced Files URL, you can change according to your choice.

Default: https://ingeomatics.com

Hide File Path on Preview ?
Hide real path of file on preview.

Default: Not Enabled

Enable Trash?
Deleted files will go to trash folder, you can restore later.

Default: Not Enabled

Display .htaccess?
Will Display .htaccess file (if exists) in file manager.

Default: Not Enabled

The page I need help with: [log in to see the link]