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ArticlesError Message: "Component error [Cannot read properties of undefined (reading 'toLowerCase')]" on Expense Entry Lightning Web Component

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Error Message: "Component error [Cannot read properties of undefined (reading 'toLowerCase')]" on Expense Entry Lightning Web Component

An error message, "Component error [Cannot read properties of undefined (reading 'toLowerCase')]," may appear when a user attempts to access an expense record. This issue occurs when a file without an extension is attached to the expense record. To resolve this, users must check the file extension field of the expense record.

  • May 15, 2023
  • Knowledge

Title
Error Message: "Component error [Cannot read properties of undefined (reading 'toLowerCase')]" on Expense Entry Lightning Web Component
URL Name
Error-Message-Component-error-Cannot-read-properties-of-undefined-reading-toLowerCase-on-Expense-Entry-Lightning-Web-Component

Release Version
Symptoms
  • Error message: "Component error [Cannot read properties of undefined (reading 'toLowerCase')]" on Expense Entry Lightning Web Component when user tries to access to an expense record
Resolution
  • Check the extension file field of the Expense record
Cause
  • Expense record has attached a file without extension
Additional Notes
Professional Services CloudCustomer Success CloudExpense ManagementFinancial Management Cloud
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Knowledge:Error Message: "Component error [Cannot read properties of undefined (reading 'toLowerCase')]" on Expense Entry Lightning Web Component