Elasticsearch error - Undefined index | Trying to access array offset on value of type null

Question

So when im trying to reindex my products im getting these errors.

Undefined index: prices_0 in../app/code/Wyomind/ElasticsearchCore/Model/Indexer/Product.php on line 938

Trying to access array offset on value of type null in

 app/code/Wyomind/ElasticsearchCore/Model/Indexer/Product.php on line
 938

I just some help in which direction i should go to solve this problem.