Help! my run code is red.
Is this a debugging or a trouble shooting issue? Please put your answer and suggest an action to take in a comment.
This one is typically a debugging issue. (There is something wrong in the code blocks)
Either a block has an empty socket (an area where it is expecting another block) or there are disconnected blocks in one of the stacks of blocks. Usually the problem was caused by something you changed recently. Go back to your code and check the recent changes you made.