The error message details from the ckeditor documentation is:
filetools-response-error
Location: plugins/filetools/plugin.js Description: An error occurred when parsing the upload response. Text could not be parsed to JSON.
Additional data: responseText: Upload response text.
not sure what to make of that.
Edit:
Did some more digging and the response when uploading (
https://otrstest.com/customer.pl?Action ... eType=json) is this webpage
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