call.html:97 Uncaught TypeError: Cannot read properties of undefined (reading 'length')

This error occurs when you try to access the length property of an undefined variable or object.

To fix this error, you need to make sure the variable or object is defined before accessing its properties. You can use an if statement to check if the variable or object is defined before accessing its properties.

For example:

if (myVariable !== undefined && myVariable.length !== undefined) {
// Access myVariable.length safely
} else {
// Handle the case where myVariable is undefined or doesn't have a length property
}