fatal error has occured, this connection is terminated

i deleted all the mods because my friend could not join my server but now i cannot join my own 1.12.2 magma server! it also sais in the console [18:33:03] [main/ERROR] [FML]: FML appears to be missing any signature data. This is not a good thing i dont know what to do! the mods i had before deleting them are: [1.12.2]+Securitycraft+x1.8.18.2.jar, mrcrayfish'sfurnituremod-6.3.0-mc1.12.2.jar, mrcrayfish'sgunmod0.15.3-mc1.12.2.jar, CMDCam_v1.4.9_mc1.12.2.jar, CreativeCore_v1.10.16_mc1.12.2.jar, Goodolcurrency-1.12.0-1.3.11.jar, moreplayermodels1.12.2, obfuscrate-0.4.2, mrcrayfish'svehiclemod-0.44.1, worldedit-forge-mc1.12.2-6.1.10-dist.jar and thats all pls respond quickly thanks!

yes but i still cant join the server

everything is fine now seems like CMDCam or creativecore were broken