Read the statement by Michael Teeuw here.
MMM-pages no rotate
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 hi @chassain-0 i tried to put only clock in page 1 an MMM-freebox in page 2 or an other module but the result is the same. I have an error about “toLowerCase’ of undefined”. Can anybody help me please 
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 I don’t know what your error is, but maybe you can try this: put animationTime, rotationTime, etc BEFORE fixed modules. Here you have an example, this is how I have it working: { module: 'MMM-pages', config: { modules: [[ "calendar_monthly", "weatherforecast", "newsfeed"], [ "calendar_monthly", "calendar", "MMM-ComicStrips_Dilbert"], [ "MMM-iFrame-Ping"], [ "MMM-Lunartic", "MMM-SunriseSet", "MMM-ComicStrips_Garfield"], [ "MMM-RandomPhoto", "MMM-History"], [ "MMM-AirQuality", "MMM-SystemStats", "newsfeed",], [ "MMM-Wallpaper"]], rotationTime: 27600, fixed: ["alert", "updatenotification", "clock", "currentweather", "MMM-page-indicator"] } },And check all commas in the module syntaxis. 
 Hope it helps.
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 On first line of your error it says: Refused to apply style from 'http://0.0.0.0:8080/modules/WallberryTheme/font-awesome5.css'Maybe that’s the problem… Check font-awesome5.css file 
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 thanks @chassain-0 and @qu1que for your help. 
 I found the gulty module. It’s MMM-Strava. When this module is in MMM-Pages Table, the rotation doesn’t work.
 So @ianperrin, do you have an idea why there is rotation problem with MMM-Strava since the autenthification has changed?
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 good ! 

