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i did and it crashes and here is the new crash file crash-2018-05-08_13.09.23-client.txt

i am new to creating modpacks, i just want to include one mod to an existing modpack. i am trying to add Thaumcraft to yaopack modpack and i get crash report. i had upload the crash report i really appreciate the help thanks in advance. crash-2018-05-08_12.30.57-client.txt