clever

No, the expected answer is 1000, not a kata issue.

In my IDE the my function return 1100 but the test says:
Incorrect answer for dice = [1, 1, 1, 3, 3]: expected 1100 to equal 1000
it is exprected 1100 to my function that returns 1100?

No, you're not, the first one is your wrong answer, read the description again. Not a kata suggestion btw.

If the string already ends with a number, the number should be incremented by 1.

for string: "foobar00999"
: expected 'foobar09991' to equal 'foobar01000',
i suppose i am right..

Your solution is incorrect - debug it.

Not a kata issue. See https://docs.codewars.com/training/troubleshooting#post-discourse.

Not a kata issue, please check again the requirements for the kata, especially:

If the final result is longer than 140 chars it must return false.

expected false to equal '#CodeWars' even if the code works just fine...