Running Unity Build though release pipeline causes an error

[Reddevildragg]

When running the unity build process though a pipeline works as expected and generates a application.

however when running the application though the release system as a stage it generates a error after finding the unity version

2021-04-29T14:17:14.0992543Z Success, Unity editor version found 2019.4.12f1, revision=225e826a680e, alpha=false, beta=false
2021-04-29T14:17:14.1003901Z Path must be a string. Received undefined
2021-04-29T14:17:14.1033779Z ##[error]Path must be a string. Received undefined

and causes the process to end. Any ideas what could be causing and any potential fixes