Error: Non [a-z0-9/._-] character in path of location: server_translations_api:lang/et_EE.json

[RareScrap]

Found this during my server startup:

[10:41:24] [ForkJoinPool.commonPool-worker-1/ERROR]: Non [a-z0-9/._-] character in path of location: server_translations_api:lang/et_EE.json

I believe there's some trouble with et_EE localization. The only mod on my server that uses this api is fastback:

        - fastback 0.7.4+1.19.2
           |-- com_googlecode_javaewah_javaewah 1.1.13
           |-- fabric-permissions-api-v0 0.2-SNAPSHOT
           |-- net_i2p_crypto_eddsa 0.3.0
           |-- org_apache_sshd_sshd-common 2.8.0
           |-- org_apache_sshd_sshd-core 2.8.0
           |-- org_eclipse_jgit_org_eclipse_jgit 6.2.0.202206071550-r
           |-- org_eclipse_jgit_org_eclipse_jgit_ssh_apache 6.2.0.202206071550-r
           |-- packet_tweaker 0.3.0+1.18.2
           \-- server_translations_api 1.4.17+1.19.2
                \-- packet_tweaker 0.3.0+1.18.2

But i doubt that it can produce this.

My server info:
OS: CentoOS 7
Minecraft version: 1.18.2
Server core: fabric-server-mc.1.19.2-loader.0.14.19-launcher.0.11.2