Error backup with cron job

I make backups with akeeba using cron jobs. Now I get this error:

ParseError {#462
#message: "syntax error, unexpected '|', expecting ';' or '{'"
#code: 0
#file: "./www/mysite.nl/public_html/libraries/regularlabs/src/ArrayHelper.php"
#line: 166
trace: {
./www/mysite.nl/public_html/libraries/regularlabs/src/ArrayHelper.php:166 {
Composer\Autoload\includeFile($file)
› */
› public static function applyMethodToValues(array $attributes, string $class = '', string $method = '', int $array_number_in_attributes = 0): array|object|null
› {
}

Any idea what goed wrong?

Yes, this was the problem. I changed php for cron jobs which solved the error.
Thanks Peter!