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Ete/externaldataerror

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< User:Ete

{{#external_value:example}}: Error: no local variable "example" was set.

^ lacks class="error"

{{#expr:nonsense}}: Expression error: Unrecognized word "nonsense".

^ has class="error"

{{#iferror:{{#external_value:example}}|is error|is not error}}: is error

^ does not work correctly

{{#iferror:{{#expr:nonsense}}|is error|is not error}}: is error

^ how it should work