WORKFLOW_PARAMETERS error!!

[diosphenol]

Hello
I have recently been running a test MS data using Optimus, I think I followed the installation guide properly on the readme file but i got the following error:

ERROR Python Edit Variable (deprecated) 0:366:407 Execute failed: Traceback (most recent call last):
File "/Applications/KNIME 3.7.0.app/Contents/Eclipse/plugins/org.knime.python_3.7.0.v201808081048/py/PythonKernel.py", line 286, in execute
exec(source_code, _exec_env, _exec_env)
File "", line 11, in
KeyError: 'WORKFLOW_PARAMETERS'

Any recommendation:)

Thanks in advance
cheers
Maz