Cache SqlGroup.php expiration_date-value not Positive

Question

Installed civicrm 5.20.1, Windows10, WP 5.3.. Install errors flag civicrm_cache.expiration_date, set in CRM/Utils/Cache/SqlGroup.php, in update and insert queries as FROM_UNIXTIME(%5) and FROM_UNIXTIME(%3) respectively, but no valid numeric arg values are supplied for expired_date like for created_date b/c $expires at line 133 isn't getting set correctly.

Answer 1

I replaced line 133 -134 in SqlGroup.php with this: $ttl1 = microtime(1); $expires = strtotime($ttl1) + self::DEFAULT_TTL;