Resolved -
Nexus Lab has been updated with new versions of pytket and qnexus, and the issue is resolved.
If you're working with qnexus locally, please update to the latest versions to avoid the issue (latest version is 0.8.1 at the time of writing).
Nov 13, 15:28 UTC
Update -
Correction: we're working on a fix for Nexus Lab which will fix this problem. Please bear with us until we have updated the Nexus Lab.
Nov 13, 10:28 UTC
Identified -
If you are using qnexus to interact with our services and seeing an error "AttributeError: type object 'pytket._tket.circuit.OpType' has no attribute 'ClExpr'", please update your installation of qnexus to v0.8.0 or newer.
We've just released an update to Nexus's lab which should fix this problem for users who are using qnexus within the Nexus Lab.
Nov 13, 10:25 UTC