[FONT=Arial Black]OK don't worry this happened with me and I solved the problem
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1 STEP - pause the game, change the difficulty to easy
2 STEP - Go in controls and change the keybinding of jump in PC change it to anything else
(I personally changed it to R key)
3 STEP - Unpause the game now after doing this it would show to mash R key instead of space so now press the r key as fast as you can
-----------------------------------------------PROBLEM SOLVED-------------------------------------------[/FONT]