Error loading Data unknown error

this happens when I look for a word in discover the kibana server stops and displays the following message:
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varsion kibana : 7.4.0

elasticsearch rest runing , when I look in kibana log files there is nothing

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Could you provide more context via logs for both kibana and elasticsearch? I need to determine the request made and the info provided only shows the error result due to the request.

It's resolved by increase memory heap for kibana . Thanks marttkime

How did you determine it was memory related? Was there an out of memory error message in the logs?

I supervised the memory kibana it exceeds 100% and it has only 286 MB. in the logs there is nothing that appears