[i can't start my server]

when i try to start my minecraft server it used to say 'an unknow error ocurred so i deleted some plugins but my server still wont start it says 'starting and right after that 'stopping' i need help

[My server starts up, and then immediately stops again when it is online, and then just keeps saying stopping forever.]

i have the same problem rn i cant start my server. could anyone help?