Line 145 Fatal error


since 3 days, impossible to connect on wordpress dashboard: when I clic on “admin” with Flywheel (on Mac) I have this message on an internet page:
Warning: require(/app/public/wp-includes/formatting.php): failed to open stream: No such file or directory in /app/public/wp-settings.php on line 145 Fatal error: require(): Failed opening required ‘/app/public/wp-includes/formatting.php’ (include_path=’.:/usr/share/php:/www/wp-content/pear’) in /app/public/wp-settings.php on line 145
The site is not on line

Thanks for your help