File upload fails with php 7.0+
I have a number of Tiki installations in one shared hosting account and I would like to update one test site to Tiki 20x, yet cannot because that means having to update my php version higher than 5.6 - and one site needs to say on Tiki 15x (or update all the sites to 20x, which I'm not ready to, several critical ones need to stay on 18x).
Though every time I have tested to change php to 7.0 or higher (tried them all. 7.0, 7.1, 7.2, 7.3, 7.4) uploading to File Galleries always fails (regardless of type of file). Since I know uploading to 18x and 20x work with Tiki in php 5.6 and 7.0+, this is obviously my settings somewhere. Files are all stored to Database as this is shared hosting.
I may have missed something in Control Panels > File Galleries, but think it is more to do with enabling a php setting in the PHP Selector in cPanel. Can anyone help by letting me know if I need to enable any of these settings?
Or, if I missed something somewhere else.
Thanks, and, Happy New Year!
br,
Mike