Problem with APostrophe

I need to replace `ERROR with &SUCCESS in all the files(120 files)

When i opened a single file
:%s/`ERROR/&SUCCESS/gc .. it works fine

I want to do all files so i went to the terminal and i typed like this
vim -c "argdo %s/`ERROR/&SUCCESS/gc | update " *.log

It gives error Unmatched `
If i removed Apostrophe "`"(left side of Keybord button 1) then it works
fine

How to proceed with this command ..Can u plz help guys .

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