Add try / catch block for DB tests

www/admin/class_test.db.php

@@ -683,6 +683,7 @@ echo "<hr>";
 
 // NOTE: try to replacate connection still exists if script is run a second time
 // open pg bouncer connection
+try {
 	$db_pgb = new CoreLibs\DB\IO($DB_CONFIG['test_pgbouncer'] ?? [], $log);
 	print "[PGB] DBINFO: " . $db_pgb->dbInfo() . "<br>";
 	if ($db->dbPrepare('pgb_sel_test_foo', $q_prep) === false) {
@@ -719,6 +720,11 @@ $stm_status = $db->dbPreparedCursorStatus('pgb_sel_test_foo', "SELECT * FROM tes
 	print "[PGB] prepared exists and query not match status: $stm_status<br>";
 
 	$db_pgb->dbClose();
+} catch (\Exception $e) {
+	print "<font color='red'>";
+	print "[PGB] Exception caught: " . $e->getMessage() . "<br>";
+	print "</font>";
+}
 
 # db write class test
 $table = 'test_foo';