diff --git a/bot.php b/bot.php
index be29834..59e1694 100755
--- a/bot.php
+++ b/bot.php
@@ -1,112 +1,117 @@
 #!/usr/bin/env php
 <?php
 # Copyright (C) 2018-2026 Valerio Bozzolan, contributors
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
 # published by the Free Software Foundation, either version 3 of the
 # License, or (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU Affero General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 namespace itwikidelbot;
 
 // autoload classes
 require __DIR__ . DIRECTORY_SEPARATOR . 'includes' . DIRECTORY_SEPARATOR . 'autoload.php';
 
 use cli\Log;
 use \Throwable;
 
 // Load credentials.
 // If the file does not exist, a wizard starts.
 config_wizard( __DIR__ . DIRECTORY_SEPARATOR . 'config.php' );
 
 // the bot must be in sync with the italian community
 date_default_timezone_set( Page::COMMUNITY_TIMEZONE );
 
 // allowed only from command line interface
 if( ! isset( $argv[ 0 ] ) ) {
 	exit( 1 );
 }
 
 // command line arguments
 $opts = getopt( 'h', [
 	'ask',
 	'days:',
 	'from:',
 	'help',
 	'minutes-ago:',
 	'verbose',
 	'no-term-wrap',
 ] );
 
 // help message
 if( isset( $opts[ 'help' ] ) || isset( $opts[ 'h' ] ) ) {
 	printf( "usage: %s [OPTIONS]\n", $argv[ 0 ] );
 	echo "    --days=DAYS        how many days to be processed (default: 1)\n";
 	echo "    --from=YYYY-MM-DD  starting date (default: today)\n";
 	echo "    --minutes-ago=N    quits if the last edit was below N minutes ago (default: 5)\n";
 	echo "    --ask              ask before saving\n";
 	echo "    --verbose          verbose mode\n";
 	echo "    --no-term-wrap     do not automatically wrap output lines to stay inside your terminal\n";
 	echo " -h --help             show this help and exit\n";
 	exit( 0 );
 }
 
 // days to be processed from now to the past
 $DAYS = isset( $opts[ 'days' ] )
 	? (int) $opts[ 'days' ]
 	: 1;
 
 // starting date formatted as 'YYYY-MM-DD'
 $DATE = isset( $opts[ 'from' ] )
 	? $opts[ 'from' ]
 	: 'now';
 
 // minimum last edit age
 $MINUTES = isset( $opts[ 'minutes-ago' ] )
 	? (int) $opts[ 'minutes-ago' ]
 	: 5;
 
 // ask for every edit
 if( isset( $opts[ 'ask' ] ) ) {
 	Page::$ASK_BEFORE_SAVING = true;
 }
 
 // verbose mode
 if( isset( $opts[ 'verbose' ] ) ) {
 	Log::$DEBUG = true;
 }
 
 // do not fill the terminal columns
 if( isset( $opts[ 'no-term-wrap' ] ) ) {
 	Log::doNotFillTerminalColumns();
 }
 
 Log::info( 'start' );
 
 try {
 	$bot = Bot::createFromString( $DATE );
 	if( $MINUTES < 1 || $bot->isLasteditOlderThanMinutes( $MINUTES ) ) {
 		for( $i = 0; $i < $DAYS; $i++ ) {
 			$bot->run()->previousDay();
 		}
 	} else {
 		// do not insist
 		Log::info( sprintf(
 			'skip: someone running less than %d minutes ago',
 			$MINUTES
 		) );
 	}
 } catch( Throwable $e ) {
 	// Log the exact time of this crash and throw it as-is
 	Log::error( 'unexpected crash:' );
+	Log::error( $e->getMessage() );
+
+	// In a terminal, see the full stack trace here.
+	// In a webserver, you can examine your error log.
+	Log::error( 'check the standard error for full details' );
 	throw $e;
 }
 
 Log::info( 'end' );