Error in render TypeError Cannot read properties of undefined reading indexOf

This error occurs when you are trying to access the indexOf property of an undefined value. The indexOf method is used to find the index of a specific value in an array or a string.

To resolve this error, you need to make sure that the object or variable you are trying to access the indexOf property from is defined and not undefined. You can do this by checking if the object exists before accessing its properties.

Here's an example of how to handle this error:

if (myArray !== undefined) {
   // Access the indexOf property
   let index = myArray.indexOf('someValue');
   // Use the index or perform further operations
} else {
   // Handle the case when myArray is undefined
   console.log('myArray is undefined');
}

By adding a check for undefined before using the indexOf method, you can prevent this error from occurring