More detailed exceptions - php

Question

I've nearly finished converting my old sql website to pdo to move to php7 and use prepared statements but im having trouble with a handful of errors.
The exceptions are not as clear as i would like, most errors point to my database class eg
Uncaught Exception: 2020-01-18 20:23:35 - SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'username' AND UNIX_TIMESTAMP('2020-01-18 20:23:35')-UNIX_TIMESTAMP(date) < 30' at line 1 in file /home/test/public_html/backend/dbclass.php on line 39
Uncaught Exception: 2020-01-18 20:23:43 - SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '86.28.135.16'', donated=0, forumbanned='no', warned='no', modcomment='', enabled' at line 1 in file /home/test/public_html/backend/dbclass.php on line 39
I am using a blunt singleton class this was the easiest way (i known this is not the best) and i had 1000 queries so a global static suited me to make it quicker. I would prefer not to wrap every query in try/catch to identify exceptions. Is they any function that might help like backtrace or gettrace im a novice so maybe theres a better way any help would be very appreciated
dbclass.php
<?php
define('DB_HOST', 'host');
define('DB_NAME', 'db');
define('DB_USER', 'user');
define('DB_PASS', 'pass');
define('DB_CHAR', 'utf8');
class DB
{
protected static $instance = null;
protected function __construct() {}
protected function __clone() {}
public static function instance()
{
if (self::$instance === null)
{
$opt = array(
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
PDO::ATTR_EMULATE_PREPARES => FALSE,
);
$dsn = 'mysql:host='.DB_HOST.';dbname='.DB_NAME.';charset='.DB_CHAR;
self::$instance = new PDO($dsn, DB_USER, DB_PASS, $opt);
}
return self::$instance;
}
public static function __callStatic($method, $args)
{
return call_user_func_array(array(self::instance(), $method), $args);
}
public static function run($sql, $args = [])
{
if (!$args)
{
return self::instance()->query($sql);
}
$stmt = self::instance()->prepare($sql);
$stmt->execute($args);
return $stmt;
}
}
exception_handler
function handleUncaughtException($e){
// Show general page to public
header("Location: exceptionerror.php");
// Construct the error string
$error = "Uncaught Exception: " . $message = date("Y-m-d H:i:s - ");
$error .= $e->getMessage() . " in file " . $e->getFile() . " on line " . $e->getLine() . "\n";
// Log details of error in a file
error_log($error, 3, "error_log.txt");
}
// Register custom exception handler
set_exception_handler("handleUncaughtException");
example of query
$stmt = DB::run("SELECT word FROM censor ORDER BY word");
while ($row = $stmt->fetch())