salmonella-html-report --compress-html --compress-graphics salmonella.log salmonella-report

Error: (assv) bad argument type: #f

        Call history:

        setup-api.scm:288: make-parameter         
        setup-api.scm:289: make-parameter         
        setup-api.scm:292: get-environment-variable       
        setup-api.scm:575: make-parameter         
        setup-api.scm:583: ensure-string          
        setup-api.scm:582: ->string       
        setup-api.scm:583: ensure-string          
        setup-api.scm:582: ->string       
        setup-api.scm:645: user-install-setup     
        setup-download.scm:49: tcp-connect-timeout        
        setup-download.scm:50: tcp-read-timeout   
        setup-download.scm:51: tcp-write-timeout          
        setup-download.scm:54: chicken-version    
        setup-download.scm:54: conc       
        setup-download.scm:64: make-parameter     
        setup-download.scm:420: char-set                <--