Issue importing a CSV

[Kerollmops]

When importing a certain CSV, Meilisearch throws an internal error. This must not happen.

To Reproduce
Send the following CSV into Meilisearch. Sending the content will create the index at the same time. Once the task has been accepted you can find in the tasks the internal error: keys must be inserted in order and only one time.

curl -X POST 'http://localhost:7700/indexes/stuff/documents' -H 'Content-Type: text/csv' -H 'Authorization: Bearer aSampleMasterKey' --data-binary @./myfile.csv

".100000","NEW","REF/RAW MATERIAL STEELS&METALS","","","",1/1/1901,,0,"EA","EA",1,0,0,0,0,0,1,0,0,0,0,0,0,76.89,0,0,0,76.89,0,0,1,0,0,"","",0,"","","","",0,"",2/28/2018 2:49:29 PM,0,"","",0,0,0,0,0,0,"",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"",0,0,"",,0,0,0
".101035","NEW","BAR, STL, HF, 1/8X1/2","","","",1/1/1901,,0,"IN","IN",40,0,0,0,0,0,240,0,0,0,0,0,0,0,0,0,0,.0104,0,21,1,0,0,"9042","",0,"","","","",0,"",6/20/2023 7:47:45 AM,0,"","",0,0,0,0,0,0,"",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"",0,0,"",,0,0,0

Expected behavior
In any case, the engine should not return an internal error. It can accept or refuse the content, but with a comprehensive error message.

Meilisearch version:
At least in v1.6.2 and until v1.7.0.

Additional content
The issue has originally been reported on Discord, and the user found a work around by fixing the primary key.

[dureuill]

Initial investigation located that the culprit for the internal error is probably:

meilisearch/milli/src/documents/builder.rs

Line 167 in 1a083d5

writer.insert(*field_id, &self.value_buffer)?;