Integration Error - OpenCTI

Hello,
After installing Opencti in a docker environment, I want to get the threat indicators to Elasticsearch. For that, I used the Elastic Agent integration for OpenCTI.
However, this integration always shows me this error :

"[
failed eval: internal error: runtime error: invalid memory address or nil pointer dereference,
Processor "conditional" with tag "" in pipeline "logs-ti_opencti.indicator-2.1.0" failed with message "Error during CEL program evaluation"
]".

Thanks!