And since this error message template was instantiated as

Can't coerce UNKNOWN to string in gv at sked.test.pl line 486

esr would be well advised to search the program text for the strings UNKNOWN and gv.

Later

... or to wait for a better-informed response. Thanks, dave_the_m.

In reply to Re^3: strange error message by Narveson
in thread strange error message by esr

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