Noonies

My almost 1 year old minehut server (me and my friends used to play on it) So heres what happened: my friend needed some brown dye for some armor he was making and i did a command since we dont have access to a jungle at the time and my keyboard went brrrr and typed FOUR EXTRA FOURS (i typed 4, the keyboard made it do 44444) and now we cant play on it anymore, any way to fix it? (also we have a clearlag plugin i did the command to make it do the clearlag on command and also tried /kill @e[type=minecraft:item] and that didnt work)