weblogic TypeError: unsupported operand type(s) for

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ERROR create_gui com.oracle.cie.wizard.domain.gui.tasks.DomainCreationGUITask - Generation Error!!
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Traceback (innermost last):
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File "<iostream>", line 17, in ?
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TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'
The solution is simple when you now the answer (as always). Instead of using the “default” config script in %MIDDLEWARE_HOME%/wlserver_10.3/common/bin

You should use the config.sh script in:
%MIDDLEWARE_HOME%/Oracle_ECM1/common/bin

Oracle_ECM -> oracle_common