You've got some bad ju ju going on there or the install was broken from the get go.
That's just wrong. Since this website is not yet live (hence no URL to share with us) I suggest you backup your files and then start putting it back from the source as you would a new install.
If you can't/won't/don't want to do that then try the usual fixes. Disable all of your plugins, switch to the default theme, and completely re-upload fresh copies of WordPress files, theme, and plugins.
Then starting with your theme put it back one item at a time (theme, plugin1, plugin2, etc.) until it breaks. If it breaks on the default theme with no plugins, then you'll probably need to start over from scratch.
As usual, backup everything before you start poking at your blog.