Filament not coming out

[Muguel 0]

my Ultimaker 2+ as in mid print wend the filament just stooped coming out, also there is a gooey brown stuff on the nozzel

[StephanK 30]

You're not really giving much info to try and figure out what could have gone wrong. Perhaps you can describe your problem a bit more detailed? What filament are you using - PLA or ABS or something else? I assume its not brown filament, so next question should be: How high did you set the nozzle temperature? What did you / the print do before this happened, did you notice anything unusual? Is this a brand new printer or has it been printing for hundreds of hours already?

A tiny bit of gooey brown residue stuff sticking to the side of the nozzle is no biggie. But if you got half a pound of brown gooey stuff there, chances are there's something wrong.

Meanwhile: I guess it won't hurt to try and do an "atomic" to clean your nozzle.. Maybe that'll get you sorted already: https://ultimaker.com/en/resources/19510-atomic-method

[gr5 2,194]

Well you probably ground the filament at the feeder. Try pulling it out backwards a bit (while nozzle at 150C) and examine the filament. If I'm right then you either have too many retractions or maybe you were printing too fast. Please post a photo of the print you were printing (I want to see how many retractions it is likely to have on a layer) and post all your cura settings somewhere (best to do "save profile" and just post that entire ini file).