Robots.txt file issues on Shopify server

[A_Q]

We have repeated issues with one of our ecommerce sites not being crawled. We receive the following message:

Our crawler was not able to access the robots.txt file on your site. This often occurs because of a server error from the robots.txt. Although this may have been caused by a temporary outage, we recommend making sure your robots.txt file is accessible and that your network and server are working correctly. Typically errors like this should be investigated and fixed by the site webmaster. Read our troubleshooting guide.

Are you aware of an issue with robots.txt on the Shopify servers? It is happening at least twice a month so it is quite an issue.

[Expansyon]

I leave you 2 url, but it seems that the robots do not let you modify it.

They propose you to put pages as non-index....

https://community.shopify.com/c/Shopify-Discussion/How-can-I-edit-robots-txt/td-p/432485/page/4

https://help.shopify.com/en/manual/promoting-marketing/seo/hide-a-page-from-search-engines

greetings