why I use randoop to generate unit test, it tells me that the class can not found

[吴肖为]

the command is as 

java -ea -classpath /home/ubuntu/bnps-web/randoop-4.3.3/randoop-all-4.3.3.jar randoop.main.Main gentests --testclass=com.ksc.bpns.service.WebhookService

the dir to execute the cmd the same as the dir of WebhookService

but it shows

Randoop for Java version "4.3.3, local changes, branch master, commit 2a061f2, 2024-08-26".

Could not load class WebhookService: Unable to load class "WebhookService" due to exception: java.lang.ClassNotFoundException: WebhookService

Classpath:

can anybody helps me, do I miss some parameters