Cannot save invoice : invoice NUM has been modified after loading please reload entry

[mildred]

I started drafting an invoice filling some rows. Then I later want to finish my invoice, update it and save it but I cannot.

I have an issue :

• ~when I add a new row to the invoice, I want to use an existing article but I cannot select an existing article, I can only create a new article which does not work if the article name is identical to an existing article~ edit: I realize now I can only add an article once
• if I try to save my invoice, I get an error: Facture de vente F2023-011 has been modified after loading please reload entry. 2023-10-10T16:01:58.633Z, 2023-10-10T16:03:38.039Z

I do not know how to reload the entry. Restarting FrappeBooks does nothing.

Perhaps this started when I updated the article (changed it from product to service).

The only way out is to delete the invoice and create a new invoice, but then I have a hole in my invoices numbering.

[mildred]

I don't know how I got this error but I could make it work by restarting FrappeBooks entirely and editing the invoice not trying to add a second row at all. Then I could save it.