Unroller error more descriptive when reaching a node without definition #6235
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1ucian0
reviewed
Apr 16, 2021
1ucian0
reviewed
Apr 16, 2021
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Summary
Fixes #5840 .
Details and comments
The error raised when the unroller reaches a node without definition is more descriptive now. For instance, for the given example in #5840 , the error message now says "Error decomposing node of instruction 'p': 'NoneType' object has no attribute 'global_phase'. Unable to define instruction 'u' in the given basis."