Delete reconciliation unimplemented for searches

[JavaScript Error: "[Exception... "'Delete reconciliation unimplemented for searches' when calling method: [nsIDOMEventListener::handleEvent]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "<unknown>" data: no]"]

report id 1585535022

Fairly self-explanatory ... any easy way of figuring out which saved search is messing things up?.
Regards,
Jon

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