Fatal error: Uncaught Error: Non-static method Benchmark::memory_usage() cannot be called statically in /www/system/core/Benchmark.php:34 Stack trace: #0 /www/system/core/Bootstrap.php(26): Benchmark::start() #1 /www/index.php(107): require('...') #2 {main} thrown in /www/system/core/Benchmark.php on line 34