diff --git a/lam/templates/tools/multiEdit.php b/lam/templates/tools/multiEdit.php
index f6a0bcc21..0ed519d0d 100644
--- a/lam/templates/tools/multiEdit.php
+++ b/lam/templates/tools/multiEdit.php
@@ -483,16 +483,18 @@ function dryRun(): array {
  * @param string $errstr error message
  * @param string $errfile error file
  * @param int $errline error line
+ * @return bool stop internal error handler
  */
-function multiEditLdapErrorHandler($errno, $errstr, $errfile, $errline): void {
-	if ($errno === E_USER_ERROR) {
+function multiEditLdapErrorHandler($errno, $errstr, $errfile, $errline): bool {
+	if (($errno === E_USER_ERROR) || ($errno === E_ERROR)) {
 		logNewMessage(LOG_ERR, 'Error occurred: ' . $errstr . " ($errfile: $errline)");
 		$_REQUEST['multiEdit_error'] = true;
 	}
-	elseif ($errno === E_USER_WARNING) {
+	elseif (($errno === E_USER_WARNING) || ($errno === E_WARNING)) {
 		logNewMessage(LOG_WARNING, 'Error occurred: ' . $errstr . " ($errfile: $errline)");
 		$_REQUEST['multiEdit_error'] = true;
 	}
+	return true;
 }
 
 /**
diff --git a/lam/templates/tools/serverInfo.php b/lam/templates/tools/serverInfo.php
index 09dbc59a3..47798bd9f 100644
--- a/lam/templates/tools/serverInfo.php
+++ b/lam/templates/tools/serverInfo.php
@@ -343,7 +343,7 @@ elseif (isset($monitorEntries['cn=monitor']['opsinitiated'])) {
 		$container->addLabel(new htmlOutputText('<b>' . _("Bind") . '</b>', false));
 		$binds = $monitorEntries['cn=snmp,cn=monitor']['anonymousbinds'][0] + $monitorEntries['cn=snmp,cn=monitor']['unauthbinds'][0]
 					+ $monitorEntries['cn=snmp,cn=monitor']['simpleauthbinds'][0] + $monitorEntries['cn=snmp,cn=monitor']['strongauthbinds'][0];
-		$container->addField(new htmlOutputText($binds));
+		$container->addField(new htmlOutputText((string) $binds));
 		$container->addLabel(new htmlOutputText('<b>' . _("Search") . '</b>', false));
 		$searches = $monitorEntries['cn=snmp,cn=monitor']['searchops'][0];
 		$container->addField(new htmlOutputText($searches));
diff --git a/phpstan.neon b/phpstan.neon
index 496b3863a..73974ccb7 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,5 @@
 parameters:
-	level: 4
+	level: 5
 	scanDirectories:
 		- lam/lib
 		- lam/templates