The project cannot be built until build path errors are resolved (Java Problem)

[catherine.cat.d]

Not able to run test programm via test suites.
Occure following issues:
The project cannot be built until build path errors are resolved (Java Problem)
Unbound classpath container ‘Default System Library’ in project.

Could somebody help me pls?

[duyluong]

Hi @catherine.cat.d,

Please try clicking on Project -> Close and Clean Up then reopen again.

Thanks

[vatripathi]

Hi @duyluong

When I performed your steps it is giving me another error. And both these errors started appearing after I updated to version 7.8.2. There were no issues in opening the same projects in the pervious version.