Error export Screen

Can you add a snap for this? also ensure that this not because of any plugin conflict. You can make debug true in wp-config to check for any warnings and paste the results here.

I did a screen capture,
https://www.tiagobernardes.com.br/images/print-wp.png

I did plugin compatibility testing, is not it.

wired, will try to reproduce

Try export with minimum no. of records like 5 or 10. Check you memory limits in php.ini, if needed increase it based on size of export data.