Translation:I have eaten too many spring rolls!
I think the second one should be omitted. I reported it (just in case).
For me, the use of this discussion thread is finding out whether I should report something. From reading through the discussion, I am convinced that the second "le" is part of the "tai ... le" combination and belongs there.
There's an implied 已經 here which is part of the 已經……了 structure hence the second instance of 了.