Logged in as user/user
went to >>System>>Synaptic Package Manager, it tried to open and gave a following reply:
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An Error Occured
The following details provided:
E: The value 'jessie' is invalid for APT::Default-Release as such a release is not available in the sources
E: _cache->open() failed, please report.
Close
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tried also >>Other>>Synaptic.sh --did not do anything !
Any idea how to fix this?