Dieharder dab_monobit2 test fails

i am currently testing some RNG numbers from a TRNG using the dieharder test suite. I got around 380MB binary test data from the TRNG and all tests pass except one test - the dab_monobit2 test (test 209) and I just dont know why.

As far as I understood the dab_monobit2 tests does exactly the same as the other monobit test (test 100) it counts the 1's and 0's within a specific range and checks if its more or less 50:50 . What is exactly the difference between the monobit test (test 100) and the dab_monobit2 test? And what does it say about my TRNG?

Here it the output of the monobit test and the dab_monobit2 test:

sts_monobit| 1| 100000| 100|0.74709531| PASSED
dab_monobit2| 12| 65000000| 1|1.00000000| FAILED