Utilities - Duplicate Detection Error

I'm trying to revie and delete my duplicates. Anyone able to tell me what this error means? "Internal server error (500)
Stacktrace
ct@http://192.168.1.182:2283/_app/immutable/chunks/9kRnNcW7.js:1:5510
@http://192.168.1.182:2283/_app/immutable/chunks/9kRnNcW7.js:1:5415"
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