Fix travis

.travis.yml

@@ -27,7 +27,7 @@ addons:
 #  browserstack:
 #    username: "nikolaymakhonin1"
 #    access_key:
-#      # You shoud generate this for each repositories.
+#      # You should generate this for each repositories.
 #      # See: https://docs.travis-ci.com/user/encryption-keys
 #      secure: "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"
 
@@ -45,11 +45,13 @@ before_install:
   # Update Node.js modules
   - "test ! -d node_modules || npm prune"
   - "test ! -d node_modules || npm rebuild"
-  -
+
 before_script:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export DISPLAY=:99.0; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sh -e /etc/init.d/xvfb start; fi
-  - sleep 3 # give xvfb some time to start
+  - export DISPLAY=:99.0
+  # https://stackoverflow.com/questions/55674746/travis-sh-0-cant-open-etc-init-d-xvfb
+  # - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export DISPLAY=:99.0; fi
+  # - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sh -e /etc/init.d/xvfb start; fi
+  # - sleep 3 # give xvfb some time to start
 
 script:
   - if [[ ${NODE_ONLY} == true ]]; then