Rstudio freezes when loading some packages <p>When i was loading some packages like"rgl", "aplpack", whenever there's gonna be a red stop sign on the right top corner of console window.</p> <p>My Rstudio just freezes, like </p> <p><a href="https://i.stack.imgur.com/MQOsb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MQOsb.png" alt="enter image description here"></a></p> <p>I typed the code like an hour ago, and it is still loading.</p> <p>But other functions work fine. My Rstudio still can run a lot of functions if the red stop sign doesn't need to appear.</p> <p>I have reinstalled Rstudio a lot of times, but it doesn't work. </p>