[Typo3] call to undefined function pam_auth()

[spam_natacha at pandora.be]

Hello,
 
Has anyone more information how to solve this error? I got this error after
adding the authpam extension. I can still login in the be, but once i'm
logged in
this error appears.  
Fatal error: Call to undefined function pam_auth() in
/data/typo3/www/janis/typo3conf/ext/cwd_authpam/class.ux_t3lib_beuserauth.ph
p on line 51
 
thx,
Natacha


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