project raised exception class EAccessViolation with message 'Access violation at address

This error message typically indicates a memory access violation. It means that your program has attempted to access a memory location that it is not allowed to access, resulting in a crash.

There are several possible causes for this error, including:

1. Attempting to access an invalid pointer or object.
2. Trying to read or write to a null pointer.
3. Accessing memory that has already been freed.
4. Stack overflow or underflow.

To fix this error, you need to identify the root cause. Here are some steps you can take:

1. Check if you are using a null pointer or invalid object.
2. Make sure you are not accessing memory that has already been freed.
3. Check if there are any buffer overflows or underflows in your code.
4. Use a debugger to track down the exact location of the error.

Once you have identified the issue, you can then take steps to fix it, such as correcting your code logic or allocating memory correctly.