Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (3) must be equal to the number of rows contained in that section before the update (3), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted).

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Problem:
Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (3) must be equal to the number of rows contained in that section before the update (3), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted).
If i delete the row and set the datasource then it shows the above exception.


Solution:

You have to reload the data in the tableView or collectionView will solve the problem.Also before delete the row must have to delete the particular index in your array or dataSource

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