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LaTeX编译时报错Loading ‘expl3.sty‘ aborted解决方法

问题报错信息

 Mismatched LaTeX support files detected.
    (LaTeX3)        Loading 'expl3.sty' aborted!
    (LaTeX3)        
    (LaTeX3)        The L3 programming layer in the LaTeX format

control consequence /ifctexpdf already defined

解决方案

我是在macTeX升级的包的时候编译报错，升级好了就没事了。。。

fmtutil-user --all

这个可能也有效果

fmtutil-sys`

Ref

https://blog.csdn.net/qq_47677800/article/details/128319453 https://tex.stackexchange.com/questions/576918/mismatched-latex-support-files-detected