Unable to access the file manager from Content Block

I am unable to access the file manager when using the content from Add Image or Add file. The file manager pops up but I receive the message [b]Unable to access the file manager[/b].

If I add an image from the image block I can access it.

Tried all the usual, File Manager Permissions and changed permissions on folders.

Has anyone seen this before?

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PassionForCreative replied on at Permalink Reply
Just in case anyone else gets the same problem:
When the content block was put into Edit Mode it looked for the file typography.css in the theme folder. (/packages/theme_this_name/themes/this_name/typography.css)

This didn't exist, so I created a blank typography.css files that sorted out my error.