500 error for Telugu and Sanskrit languages

[monzug]

tested and reported in #145 and alpheios-project/tokenizer#33
500 error is generated for Telugu and Sanskrit languages.

I used this text for Telugu language:
Pratipattisvatvamula visyamuna mānavulellarunu janmataḥ svataṁtrulunu samānulunu naguduru.

Vāru vivēdanāṁtaḥkaraṇa saṁpannulaguṭacaē parasparamu bhrātṛbhāvamutō vartiṁpavalayunu

in English:
All human beings are born free and equal in dignity and rights.

They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood.

I used this text for Sanskrit from https://omniglot.com/writing/sanskrit.htm

Sarvē mānavāḥ svatantrāḥ samutpannāḥ vartantē api ca, gauravadr̥śā adhikāradr̥śā ca samānāḥ ēva vartantē.

Ētē sarvē cētanā-tarka-śaktibhyāṁ susampannāḥ santi. Api ca, sarvē´pi bandhutva-bhāvanayā parasparaṁ vyavaharantu.

in English:
All human beings are born free and equal in dignity and rights.

They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood.