Error DOI in Crossref

We recently actualized our OJS’ version with no inconvenience, from 3.2.1.1 to 3.4.5.5. Version 3.2.1.1 worked properly before actualization, DOI’s were generated and deposited in Crossref from OJS without any problem; but it is not the case with 3.4.5.5, which keeps showing me a registration error message. DOI configuration is as follow:

  1. OJS version 3.4.5.5
  2. DOI prefix: 10.19136
  3. Personally assigned suffix
  4. Journal’s title: Horizonte Sanitario
    I am sending attached screenshots of errors mentioned before.

Your submitted DOI has no suffix. Also please check your custom DOI suffix pattern, it has an error.