When preloading enabled nested package pear/math_biginteger undefined constant error

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PHP 7.4.25 (cli) (built: Nov 13 2021 09:50:49) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.25, Copyright (c), by Zend Technologies
    with Xdebug v2.9.8, Copyright (c) 2002-2020, by Derick Rethans

pear/math_biginteger                    v1.0.3
digitaldonkey/ethereum-php          dev-master 650b470

Error:

php.WARNING: Warning: Use of undefined constant MATH_BIGINTEGER_MODE_GMP - assumed 'MATH_BIGINTEGER_MODE_GMP' (this will throw an Error in a future version of PHP) {"exception":"[object] (ErrorException(code: 0): Warning: Use of undefined constant MATH_BIGINTEGER_MODE_GMP - assumed 'MATH_BIGINTEGER_MODE_GMP' (this will throw an Error in a future version of PHP) at /var/www/vendor/pear/math_biginteger/Math/BigInteger.php:336)

Preloading enabled

opcache.preload => /var/www/config/preload.php => /var/www/config/preload.php
opcache.preload_user => www-data => www-data