count - tinybutstrong receive error in tbs_class.php after upgrading to PHP 7.4

Question

My hosting service upgraded my PHP version to 7.4 without notice. I'm now reciving the following error in the error log that points to the tbs_class.php PHP Warning: count(): Parameter must be an array or an object that implements Countable in tbs_class.php on line 2206

/** *

• TinyButStrong - Template Engine for Pro and Beginners
• @version 3.10.1 for PHP 5
• @date 2015-12-03
• @link http://www.tinybutstrong.com Web site
• @author http://www.tinybutstrong.com/onlyyou.html
• @license http://opensource.org/licenses/LGPL-3.0 LGPL-3.0
• This library is free software.
• You can redistribute and modify it even for commercial usage,
• but you must accept and respect the LPGL License version 3. */

function meth_Merge_Block(&$Txt,$BlockLst,&$SrcId,&$Query,$SpePrm,$SpeRecNum,$QryPrms=false) {

$BlockSave = $this->_CurrBlock;
$this->_CurrBlock = $BlockLst;

// Get source type and info
$Src = new clsTbsDataSource;
if (!$Src->DataPrepare($SrcId,$this)) {
    $this->_CurrBlock = $BlockSave;
    return 0;
}

if (is_string($BlockLst)) $BlockLst = explode(',', $BlockLst);
**$BlockNbr = count($BlockLst);**
$BlockId = 0;
$WasP1 = false;
$NbrRecTot = 0;
$QueryZ = &$Query;
$ReturnData = false;

Answer 1

等待大神答复