Hello Multidimentional,
I do the following steps to fix this type of issue. I hope it will help you too.
Step 1: Please make sure your all plugins are updated (Sometimes this issue come due to an outdated plugin)
Step 2: Please make sure you have not installed any other Header and Footer builder plugin. If you are using any other header and footer plugin too. Then it can conflict with the Elementor header and footer builder
Step 3: Deactive each plugin one by one to find the root cause plugin. In this way, you can find the plugin easily which is conflicting
Remember: Please always take a backup of your website before following the above steps.
Thanks,
David
