@paripari it’s the weekend so help is likely to be a little slower.
Based on what you show it’s going to be quite hard to suggest what’s wrong apart from the obvious & from a jpg without any other detail of the events surrounding the problem almost impossible.
I can just about see that your using a custom theme ( I have quite good eyesight but that text is really small!) and that you have the issue referenced as occurring from the sidebar.php of the theme, I’m guessing a custom bp loop or widget. You’ll need initially to approach the theme authors and ask them if they can help out, if not then re-post here but supply a little detail about your setup and the sidebar file contents.