No it’s not your Tweets that are keeping you out of the social network, the service is completely down.
Users trying to log in Thursday afternoon were met with a message from Twitter warning that something is technically wrong. It told users in the digital message that it’s in the process of fixing it and that things will be back to normal soon.
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The problem appeared to occur in the afternoon on Thursday with Downdector, the website that tracks Internet outages, starting to see reports at 11:46 a.m PT.
Source: Interesting Engineering