nnot read properties of undefined (reading '$el')
    The message "could not read properties of undefined (reading "$el")" typically appears in JavaScript when a variable is undefined or not available in the current context.
    In this specific case, it seems that the "$el" variable is being used in a context where it is not available. It"s possible that the code is trying to use a variable that has not yet been defined, or that it is trying to access a variable from a different context than the one in which it is currently defined.variable used in lambda
    To resolve this issue, you will need to ensure that the "$el" variable is defined and available in the current context. You can do this by checking the code surrounding the "$el" variable and making sure that it is being defined in the right place and in the right way. You may also need to check for typos or other errors that could be causing the issue.
    Overall, this message typically indicates that a variable is undefined or not available in the current context, and it suggests that you check the code surrounding the variable to ensure that it is being defined and used correctly.。

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