Hello totoakak9533,
Thank you for your question regarding a Joomla 3 ygm1 error. We are happy to help you troubleshoot your site, but will need some additional information. Your post showed up as a bunch of question '?' marks. Is that the error you are actually getting, or is it replacing characters with question marks when you post?
Can you provide a link to the error for us to test?
What were you working on when you started getting this error? For example, did this happen after installing an extension, or adding a new theme?
Thank you,
John-Paul