Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /home/albanyc/app/controllers/publications.php:14 Stack trace: #0 /home/albanyc/app/controllers/publications.php(14): usort(NULL, Object(Closure)) #1 /home/albanyc/app/routes.php(62): include('/home/albanyc/a...') #2 [internal function]: {closure}(Object(True\Request)) #3 /home/albanyc/vendor/truecastdesign/true/src/Router.php(229): call_user_func_array(Object(Closure), Array) #4 /home/albanyc/vendor/truecastdesign/true/src/Router.php(112): True\Router->router(Array, '/*:path', Object(Closure), Array) #5 /home/albanyc/app/routes.php(68): True\Router->any('/*:path', Object(Closure)) #6 /home/albanyc/init.php(38): require('/home/albanyc/a...') #7 /home/albanyc/public_html/index.php(2): require('/home/albanyc/i...') #8 {main} thrown in /home/albanyc/app/controllers/publications.php on line 14