Okay. What have I done... or not done? Tried to upload 800K pdf... gave this error message.
I use a shared sever, blue host. Had to build the forum on my PC then upload to the web host.
When I click on the uploaded file I get a 404 error goes to some kind of JSON debugger screen
Tabs show: JASON, RAW Data, Headers
Tabs directly beneath those: Save, Copy, Collapse All, Expand All
Then you have error text:
Errors:
0:
status: "404"
code: "Resource_not_found."