Fatal error during import CSV

[UOC01A]

I tried to upload a CSV file to create 100 issues in bulk:

Resumen,Tipo de Incidencia,Etiqueta
"[General][Arbres plantilla (inclou LTI)] Traspàs d'entitats mestres a Minerva (matèdia, curs, unitats, CCAA) - PSO",Incidencia,Calendari_dependències CEPDA-PSO-PROD_ 2024
[General][Arbres plantilla (inclou LTI)] Definir format csv Minerva-PSO per a arbres plantilla - PSO-CEPDA,Incidencia,Calendari_dependències CEPDA-PSO-PROD_ 2024
(...)

The validation process completed without errors:

2024-04-30 17:48:41,042 INFO - Importer started!
2024-04-30 17:48:41,042 INFO - Engine is running in Validation-only mode
2024-04-30 17:48:41,165 INFO - All issues will be imported to project: SCIT Atención a usuarios (SAU)
2024-04-30 17:48:41,198 INFO - Creating issue: [externalId='autoid--3483346516412815781', summary='[General][Arbres plantilla (inclou LTI)] Traspàs d'entitats mestres a Minerva (matèdia, curs, unitats, CCAA) - PSO']
2024-04-30 17:48:41,415 INFO - No problems found with issue '[General][Arbres plantilla (inclou LTI)] Traspàs d'entitats mestres a Minerva (matèdia, curs, unitats, CCAA) - PSO'
2024-04-30 17:48:41,423 INFO - Creating issue: [externalId='autoid-6584319897543760702', summary='[General][Arbres plantilla (inclou LTI)] Definir format csv Minerva-PSO per a arbres plantilla - PSO-CEPDA']
2024-04-30 17:48:41,477 INFO - No problems found with issue '[General][Arbres plantilla (inclou LTI)] Definir format csv Minerva-PSO per a arbres plantilla - PSO-CEPDA'
(...)

Although the CSV specifies the issue type (issue), a fatal error is generated at the end of the process:

2024-04-30 17:48:57,142 INFO - Importer started!
2024-04-30 17:48:57,142 INFO - Engine is running in Import mode
2024-04-30 17:48:57,278 INFO - All issues will be imported to project: SCIT Atención a usuarios (SAU)
2024-04-30 17:48:57,300 INFO - Creating issue: [externalId='autoid--7379651277101761903', summary='[General][Arbres plantilla (inclou LTI)] Traspàs d'entitats mestres a Minerva (matèdia, curs, unitats, CCAA) - PSO']
2024-04-30 17:48:57,517 ERROR - Fatal error during import: Cannot invoke "com.atlassian.jira.issue.Issue.getIssueType()" because "issue" is null

Is all of this due to the fact that the interface we are using is in Spanish?