[CWB] Error message

[Graham Ranger -- UAPV]

Hello everybody,
I'm running a very old version of cqpweb 3.2.30 which has begun to give 
me the following error message on any query (or other actions):

ERROR: CQP backend startup failed; the reported CQP version [] could not 
be parsed.

I suspect the real solution will be to move on to something more 
recent... But I'm also wondering whether the error might come from an 
update to Debian which now runs php7.
My question: is there a simple fix, that would enable me to continue 
working on my corpora, and gain a little time before doing an update (or 
possibly a fresh install, if that looks a safer option).
Many thanks in advance for any help.
Best,
Graham.
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