How did you create secrets, i see all the places you mentioned same secret name, how object key is created?
you can check the environment variables to make sure all the variables are set.
https://docs.camunda.io/docs/next/self-managed/identity/deployment/configuration-variables/?_gl=1*19urzyb*_gcl_au*ODUxNTQ5NjQ4LjE3NDI4Mzc0OTIuOTA5MDIxNDMyLjE3NDY3MTkyMDcuMTc0NjcxOTY2Mg…FPAUODUxNTQ5NjQ4LjE3NDI4Mzc0OTI._gaMTE2NDc4NzczNC4xNzQyODM3MTgw*_ga_4EYN8X5FNR*czE3NDY3MTcwNjAkbzEwNSRnMSR0MTc0NjcxOTY2MiRqMCRsMCRoMTg4MjQ1NDY5NQ…#component-configuration
Also you can refer the old thread,