htmlspecialchars() expects parameter 1 to be string, int given

[vk-chaertl]

Hello there,

I am trying to add a bunch of entries to fe_users, but I get an error at StoreData step.

(1/1) TypeError
htmlspecialchars() expects parameter 1 to be string, int given

in [...]/typo3conf/ext/external_import/Classes/Step/StoreDataStep.php line 1107

Context:

$data = unserialize($row['log_data'], ['allowed_classes' => false]);
                        $message = sprintf(
                            $label,
                            htmlspecialchars($data[0] ?? ''),
                            htmlspecialchars($data[1] ?? ''), <---
                            htmlspecialchars($data[2] ?? ''),
                            htmlspecialchars($data[3] ?? ''),
                            htmlspecialchars($data[4] ?? '')
                        );

The user names do indeed contain umlauts, scharf ß, hyphens and will in the future also include the @ sign and dots. Could this be the reason? How can I handle this? We sadly cannot change the usernames, and we know they work either way if we put them in manually.

[vk-chaertl]

Literally saw #246 five seconds after posting this. Apologies.

[fsuter]

Yes, it's the same.