I checked the php-fpm log and received the following message:

PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 28672 bytes) in /home/....com/public_html/.../includes/cache.inc on line 361
 PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 262144 bytes) in /home/....com/public_html/.../includes/database/database.inc on line 731
 PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 16384 bytes) in /home/....com/public_html/.../includes/cache.inc on line 449
 PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 16384 bytes) in /home/....com/public_html/.../includes/cache.inc on line 449
 PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 16384 bytes) in /home/....com/public_html/.../includes/cache.inc on line 449
 PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 20480 bytes) in /home/....com/public_html/.../includes/cache.inc on line 449
 PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 16384 bytes) in /home/....com/public_html/.../includes/cache.inc on line 449
 PHP Fatal error:  Allowed memory size of 4294967296 bytes exhausted (tried to allocate 32768 bytes) in /home/....com/public_html/.../includes/database/database.inc on line 2284

# function contains line 361
 function getMultiple(&$cids) {
    try {
      // Garbage collection necessary when enforcing a minimum cache lifetime.
      $this->garbageCollection($this->bin);

      // When serving cached pages, the overhead of using db_select() was found
      // to add around 30% overhead to the request. Since $this->bin is a
      // variable, this means the call to db_query() here uses a concatenated
      // string. This is highly discouraged under any other circumstances, and
      // is used here only due to the performance overhead we would incur
      // otherwise. When serving an uncached page, the overhead of using
      // db_select() is a much smaller proportion of the request.
      $result = db_query('SELECT cid, data, created, expire, serialized FROM {' . db_escape_table($this->bin) . '} WHERE cid IN (:cids)', array(':cids' => $cids));
      $cache = array();
// #361     
 foreach ($result as $item) { 
        $item = $this->prepareItem($item);
        if ($item) {
          $cache[$item->cid] = $item;
        }
      }
      $cids = array_diff($cids, array_keys($cache));
      return $cache;
    }
    catch (Exception $e) {
      // If the database is never going to be available, cache requests should
      // return FALSE in order to allow exception handling to occur.
      return array();
    }
  }

#function contains line 449
protected function prepareItem($cache) {
    global $user;

    if (!isset($cache->data)) {
      return FALSE;
    }
    // If the cached data is temporary and subject to a per-user minimum
    // lifetime, compare the cache entry timestamp with the user session
    // cache_expiration timestamp. If the cache entry is too old, ignore it.
    if ($cache->expire != CACHE_PERMANENT && variable_get('cache_lifetime', 0) && isset($_SESSION['cache_expiration'][$this->bin]) && $_SESSION['cache_expiration'][$this->bin] > $cache->created) {
      // Ignore cache data that is too old and thus not valid for this user.
      return FALSE;
    }

    // If the data is permanent or not subject to a minimum cache lifetime,
    // unserialize and return the cached data.
//#449
    if ($cache->serialized) {
      $cache->data = unserialize($cache->data);
    }

    return $cache;
  }

My current php.ini file is as follows:

PHP version:    7.4.33
PHP memory_limit:   4G
PHP post_max_size:  16M
PHP upload_max_filesize:    4M
PHP max_input_vars: 1000
PHP max_execution_time: 60
And:
OS: Almalinux 9,
webserver: Apache
Drupal version: V 7.101

I tried adjusting the memory_limit parameter in php.ini to 7GB and received the following error message

PHP Fatal error:  Allowed memory size of 7516192768 bytes exhausted (tried to allocate 32768 bytes) in /home/.....com/public_html/..../includes/cache.inc on line 361
PHP Fatal error:  Allowed memory size of 7516192768 bytes exhausted (tried to allocate 20480 bytes) in /home/.....com/public_html/..../includes/cache.inc on line 449
PHP Fatal error:  Allowed memory size of 7516192768 bytes exhausted (tried to allocate 20480 bytes) in /home/.....com/public_html/..../includes/cache.inc on line 449
PHP Fatal error:  Allowed memory size of 7516192768 bytes exhausted (tried to allocate 20480 bytes) in /home/.....com/public_html/..../includes/cache.inc on line 449
PHP Fatal error:  Allowed memory size of 7516192768 bytes exhausted (tried to allocate 20480 bytes) in /home/.....com/public_html/..../includes/cache.inc on line 449
PHP Fatal error:  Allowed memory size of 7516192768 bytes exhausted (tried to allocate 262144 bytes) in /home/.....com/public_html/..../includes/database/database.inc on line 731

I don’t understand where the error comes from, please help me. I tried changing it by setting memory_limit = -1 and my server crashed after 24 hours