I am unable to save the component LTNG_Access_Control_Challenge_Wrapper.cmp at all. This is also true of the wrapper file in the demo. Any time I make any change and attempt to save either file, I receive this error:

Failed to save LTNG_Access_Control_Challenge_Wrapper.cmp: An unexpected error occurred. Please include this ErrorId if you contact support: 510282782-23865 (167693694)

Thanks for any help / suggestions

For the Challenge1 of 'Create Secure Lightning Components Module', I identified 2 vulnerabilities and removed in the code (as shown in screenshot. However, still I am getting the error "The 'LTNG_Secure_Component_Challenge' component is not yet secured. Remember, unescapedHTML is dangerous. ui:outputRichText is a safer alternative.". I have already replaced unescapedHtml tag with ui:outputRichText. Do anyone come across this?