I was playing on a server and then all the sudden I went into a purplish screen then the following error message came up.
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duplicates 1
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Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-7197. If I am wrong, please go yell at Dinnerbone.
Please do not mark issues as private, unless your bug report is a security issue containing information that may compromise your server/client.