Getting the following error on one of my components. Have set mime type to Application/PDF but it does not want to do the upload.

Error
Mime type not valid (application/pdf; charset=binary), allowed Mimes are application/pdf :

UPDATE: Actually none of the upoads are working.

Using current stable Builder and Joomla 3.9 -This is affecting a sale to a prospective client.

I have checked PHP versions on my server and tried 7.1 - 7.4, updated to the latest Joomla version 3.9.15. No fix so far. I have tried in the sand box and what do you know it works. Sandbox version is 3.8 but not sure if that also means Joomla 3.8 - Does the builder need updating for 3.9? Please respond. Is anyone else having this problem?

Have tried this on another server and have no problems. So sorry, looks like a hosting problem with the way it is set up. config or php.ini file or other settings to check on.