ERC loading product availability

https://rozpakui.crm-onebox.com Integration with the ERC supplier is configured, this morning at 3 o'clock all goods from this supplier became out of stock. For example 1 product https://rozpakui.crm-onebox.com/admin/shop/products/43294/history/?systemchange=1&filter2_key=valueold&filter2_type=search&filter2_value=&filter3_key=valuenew&filter3_type=search&filter3_value=&fieldkey=&filtercdatefrom=&filtercdateto= The history shows that at 3 o'clock the availability changed, so for all goods of this supplier. I checked this product on the website of the supplier, it is available there (the supplier says that if it is available on the website, then it will be available in the integration) I can’t open the erc log file, because the file is very large, it just won't open. Please check what the problem is on the example of this product, there is a feeling that something has broken in the integration.