Error in Console

Failed to load resource: the server responded with a status of 404 (Not Found)
find-my-blocks.js?ver=1616512786:192696 Uncaught TypeError: Cannot read property ‘length’ of undefined
at FindMyBlocks (find-my-blocks.js?ver=1616512786:192696)
at renderWithHooks (find-my-blocks.js?ver=1616512786:24450)
at updateFunctionComponent (find-my-blocks.js?ver=1616512786:26629)
at beginWork (find-my-blocks.js?ver=1616512786:28154)
at HTMLUnknownElement.callCallback (find-my-blocks.js?ver=1616512786:9843)
at Object.invokeGuardedCallbackDev (find-my-blocks.js?ver=1616512786:9892)
at invokeGuardedCallback (find-my-blocks.js?ver=1616512786:9945)
at beginWork$1 (find-my-blocks.js?ver=1616512786:32706)
at performUnitOfWork (find-my-blocks.js?ver=1616512786:31673)
at workLoopSync (find-my-blocks.js?ver=1616512786:31646)
find-my-blocks.js?ver=1616512786:29062 The above error occurred in the <FindMyBlocks> component:
in FindMyBlocks

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logCapturedError @ find-my-blocks.js?ver=1616512786:29062
find-my-blocks.js?ver=1616512786:192696 Uncaught (in promise) TypeError: Cannot read property ‘length’ of undefined
at FindMyBlocks (find-my-blocks.js?ver=1616512786:192696)
at renderWithHooks (find-my-blocks.js?ver=1616512786:24450)
at updateFunctionComponent (find-my-blocks.js?ver=1616512786:26629)
at beginWork (find-my-blocks.js?ver=1616512786:28154)
at HTMLUnknownElement.callCallback (find-my-blocks.js?ver=1616512786:9843)
at Object.invokeGuardedCallbackDev (find-my-blocks.js?ver=1616512786:9892)
at invokeGuardedCallback (find-my-blocks.js?ver=1616512786:9945)
at beginWork$1 (find-my-blocks.js?ver=1616512786:32706)
at performUnitOfWork (find-my-blocks.js?ver=1616512786:31673)
at workLoopSync (find-my-blocks.js?ver=1616512786:31646)