No records for csv in magento 2.3.7

[matteotestoni]

// Provide a general summary of the issue in the Title above

Preconditions

// Provide a more detailed information about you Magento, Apache2/nginx, PHP & MySQL version
// Provide example CSV file to help us reproduce your issue

1. Magento 2.3.7
2. Php 7.3
3. Simple csv with sku and qty

Steps to reproduce

// Provide a list of steps to reproduce this bug, include which plugins you use
// You can attach your magmi profile files stored in directory "{your Magento dir}/magmi/conf/{your profile name directory}

1. Create a profile to update only qty
2. Csv with 2 columns sku qty

Actual result

// Tell us what happens instead - screenshot, logs etc.

1. No records from csv datasource