An error is raised on a workflow during package deployment:
Fail Process <Workflow Name> The following errors occurred while compiling the process (with framework version 4.6.1): C:\ProgramData\Temp\07f2f70d3aba49d29ebbf8a0c3ede202\Project\<Workflow Name>.kprx(0,0) : error : Unable to validate the environment field 'From Address'. The environment library is not connected.
The same error is seen for all other environment fields as well.
Please perform a K2 service restart.