Fatal error: Uncaught Error: Non-static method ra_functions::inferences() cannot be called statically in /home/alberotreffiletti/albero.treffiletti.it/modules/research_assistant/forms/ra_ViewInferences.php:117 Stack trace: #0 /home/alberotreffiletti/albero.treffiletti.it/modules/research_assistant/forms/ra_ViewInferences.php(285): ra_ViewInferences->contents() #1 /home/alberotreffiletti/albero.treffiletti.it/modules/research_assistant/ra_functions.php(313): ra_ViewInferences->display_form() #2 /home/alberotreffiletti/albero.treffiletti.it/modules/research_assistant/research_assistant.php(404): ra_functions->print_form('ra_ViewInferenc...') #3 /home/alberotreffiletti/albero.treffiletti.it/module.php(108): research_assistant->main() #4 {main} thrown in /home/alberotreffiletti/albero.treffiletti.it/modules/research_assistant/forms/ra_ViewInferences.php on line 117