# OPC UA error ReferenceError: opcuaBasics is not defined

**URL:** <https://discourse.nodered.org/t/opc-ua-error-referenceerror-opcuabasics-is-not-defined/76543>\
**Category:** General\
**Tags:** opcua\
**Created:** [14 March 2023 09:01 UTC](https://discourse.nodered.org/t/opc-ua-error-referenceerror-opcuabasics-is-not-defined/76543 "2023-03-14T09:01:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![marc7600](https://avatars.discourse-cdn.com/v4/letter/m/3d9bf3/32.png) [@marc7600](https://discourse.nodered.org/u/marc7600)\
**Post date:** [14 March 2023 09:01 UTC](https://discourse.nodered.org/t/opc-ua-error-referenceerror-opcuabasics-is-not-defined/76543/1 "2023-03-14T09:01:25Z")

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Hello everyone,

i installed Node Red with contrib opcua on a VM with fedora. When I add an OPC UA client node red says this: ReferenceError: opcuaBasics is not defined

has anyone an idea what this means?

thanks a lot

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**Author:** ![mikakaraila](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mikakaraila/32/37496_2.png) [@mikakaraila](https://discourse.nodered.org/u/mikakaraila)\
**Post date:** [14 March 2023 16:45 UTC](https://discourse.nodered.org/t/opc-ua-error-referenceerror-opcuabasics-is-not-defined/76543/2 "2023-03-14T16:45:56Z")

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Bug, fixed to latest version. Code was missing require.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [13 May 2023 16:46 UTC](https://discourse.nodered.org/t/opc-ua-error-referenceerror-opcuabasics-is-not-defined/76543/3 "2023-05-13T16:46:16Z")

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