Hello,
does anyone knows what can cause this error when matching a definition in H20.5.x ?

File "C:\PROGRA~1/SIDEEF~1/HOUDIN~1.370/houdini/python3.11libs\hou.py", line 17316, in matchCurrentDefinition
return _hou.OpNode_matchCurrentDefinition(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
hou.OperationFailed: The attempted operation failed.
Error: Syntax error in file: 'channel' expected.

Not all my OTLs suffer of this problem but they all work fine up to H20.

In short, I can not edit and update some OTL under H20.5.x anymore.

Thank you in advance for any help!