I am setting up a local dev server for building and testing prestashop sites (PHP7.2, Nginx, & MariaDB). Server setup went fine. Prestashop installed without any errors. Store frontend appears to be fine, backend is a mix of working pages, 404 pages and 500 internal server errors. There doesn't appear to be any pattern to these errors, however, they do appear consistantly ((invoices always comes up with 404, shopping carts always comes up with 500). Below is a list of the pages and errors (just incase someone can see a pattern I cannot). Any help / ideas welcome.
Thanks - D
Sell
Orders
Orders - 500 Internal Server Error
Invoices - 404
Credit Slips - OK
Delivery Slips - 404
Shopping Carts - 500 Internal Server Error
Catalog
Products - 400
Categories - 500 Internal Server Error
Monitoring - OK
Attributes & Feature - OK
Brands & Suppliers - OK
Files - OK
Discounts - OK
Stocks - 404
Customers
Customers - 500 Internal Server Error
Addresses - OK
Customer Service
Customer Service - 500
Order Message - OK
Returns - OK
Stats - OK
Improve
Modules
Module Catalog - OK
Module Manager - 404
Design
Theme & Logo - OK
Theme Catalog - OK
Pages - OK
Positions - 404
Image Settings - OK
Link Widget - OK
Shipping
Carriers - OK
Preferences - 404
Payments
Payment Method - 404
Preferences - 404
International
Localization - 404
Locations - OK
Taxes - OK
Translations - 404
Configure
Shop Parameters
General - 404
Order Settings - 404
Product Settings - 404
Customer Settings - 404
Contact - OK
Traffic & SEO - 404
Search - Unformatted page
Merchant Expertise - OK
Advanced Parameters
Information - 404
Performance - 404
Administration - 404
E-mail - 404
Import - 404
Team - OK
Database - OK
Logs - 404
Webservice - OK