It means that the regex in the pattern match is not well formed. It happens to be /$mappingfield/, so it's hard to tell without seeing what's in $mappingfield. Wild guess, but I may well be wrong: you may want /\Q$mappingfield/. But then also look at index.

BTW: use <code> tags to format code in your posts.

In reply to Re: what error does this signify? by blazar
in thread what error does this signify? by deepa

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