Trying to track redshift Assert error

Since today we are having this error, the DBT/SQL was not touched I'm receiving errors in many processes with this same message. A full refresh on DBT clears it, but when the first incremental runs, it starts to fail again with the same error, "context" is not helping. I ran the query manually and had no trouble at all. It's a query that creates a table, a delete on the destination table (with a where), and inserts into it (managed by DBT that wasn't modified for more than 6 months, the query runs daily and also wasn't changed on the last months). The only thing that I think changed was the Redshift version via an auto-maintenance yesterday, but can't do a rollback to validate, or can I? I was in "current" version on maintenance, just switched to "trailing", now I'm on 1.0.38361, and can't find the changelog for that version.

20:26:44 | 
20:26:44 | 1 of 1 START incremental model xxxxxx......... [RUN]
20:26:51 | 1 of 1 ERROR creating incremental model xxxxxx [ERROR in 6.44s]
20:26:51 | 
20:26:51 | Finished running 1 incremental model in 8.55s.

Completed with 1 error and 0 warnings:

Database Error in model xxxxx (models/xxxxx.sql)
  Assert
  DETAIL:  
    -----------------------------------------------
    error:  Assert
    code:      1000
    context:   size >= 0 - size=-2, 0=0. 
    query:     62706875
    location:  tbl_trans.cpp:867
    process:   padbmaster [pid=70356]
    -----------------------------------------------
  compiled SQL at target/run/xxxxx/xxxxx.sql

Done. PASS=0 WARN=0 ERROR=1 SKIP=0 TOTAL=1

Any idea of what can be happening?

Thanks!