#6300 NoSuchMethodError StringUtils.appendIfMissing
#6300 NoSuchMethodError StringUtils.appendIfMissing

Xiaomi doesn't seem to support this method.

cgeo/cgeo,rsudev/c-geo-opensource,matej116/cgeo,tobiasge/cgeo,superspindel/cgeo,kumy/cgeo,Bananeweizen/cgeo,S-Bartfast/cgeo,matej116/cgeo,S-Bartfast/cgeo,rsudev/c-geo-opensource,rsudev/c-geo-opensource,cgeo/cgeo,auricgoldfinger/cgeo,tobiasge/cgeo,S-Bartfast/cgeo,kumy/cgeo,Bananeweizen/cgeo,pstorch/cgeo,tobiasge/cgeo,Bananeweizen/cgeo,auricgoldfinger/cgeo,superspindel/cgeo,matej116/cgeo,cgeo/cgeo,superspindel/cgeo,cgeo/cgeo,pstorch/cgeo,pstorch/cgeo,kumy/cgeo,auricgoldfinger/cgeo