Server could not be started due to a network error. Quitting...

Hello everyone. I just registered to this forum and I am not some kind of professional mount and blade player... I have started my first server a month ago I have port forwarded etc. But now I need 2 servers running at one time. I always can start one but when I start the second server while the first one is running I get this  Server could not be started due to a network error. Quitting... . I have set for both same log folder, same ban file.. Different ports, both are opened its 7240 for first server 7241 for second one.. I dont know what to do else can somebody help me? Thanks for reading and have a nice day

Sorry if it's too late, but 7241 is reserved for steam. So set your second port to 7242 and it will work