SSO provider supplies groups as a string resulting in module error message: ($groups) must be of type array, string given

[sol1-matt]

icinga-sso-web module version: 1.0.0
provider: Jumpcloud

Error message

Icinga\User::setGroups(): Argument #1 ($groups) must be of type array, string given, called in /usr/share/icingaweb2/modules/sso/application/controllers/OidcController.php on line 113

Expected result: No error message

Tested solution: Added is_string check and convert to array in sso/application/controllers/OidcController.php:95 before group parsing. After adding this SSO works as expected without error.

        if (is_string($groups)) {
            $groups = array_filter(array_map('trim', explode(',', $groups)));
        }

        if ($groups !== null) {
            $groupnameSearch = $login->config->groupname_search ?? '';

            if ($groupnameSearch !== '') {
                $groups = array_map(function ($group) use ($groupnameSearch, $login): string {
                    return preg_replace($groupnameSearch, $login->config->groupname_replace ?? '', $group);
                }, $groups);
            }
        }