When I start texmaker on the Linux commandline, this happens immediatly:
$ texmaker texmaker: symbol lookup error: texmaker: undefined symbol: synctex_next_result
Similarly, when enabling SyncTex in the gummi editor when it's already running and then trying to build a document:
$ gummi [Info] ... gummi: symbol lookup error: gummi: undefined symbol: synctex_next_result
Using SyncTex in Gummi only stopped working a few days ago. Changing to a different engine doesn't solve the problem. I'm using the TeX Live 2018/dev/Debian installed via apt on Linux Mint 18. How can I fix this issue?