i have fixed that error but i have this one now.
12:16:58
pixelmon
Client thread
error
The mod pixelmon is expecting signature b282c68c3ea73c056b41db40e1d7e022be3ea801 for source PixelmonDark1.6.1.jar, however there is no signature matching that description
12:16:58 pixelmon Client thread error The mod pixelmon is expecting signature b282c68c3ea73c056b41db40e1d7e022be3ea801 for source PixelmonDark1.6.1.jar, however there is no signature matching that description
https://pastebin.com/cAnTa78P
the crash log