Exception in rendering! Message: window is not defined ReferenceError: window is not defined at new c (/tmp/execjs20161208-83728-1f2zbz5js:136:3912) at m.mountComponent (/tmp/execjs20161208-83728-1f2zbz5js:47:15602) at /tmp/execjs20161208-83728-1f2zbz5js:49:31860 at a.r.perform (/tmp/execjs20161208-83728-1f2zbz5js:47:12503) at Object.a [as renderToString] (/tmp/execjs20161208-83728-1f2zbz5js:49:31821) at r (/tmp/execjs20161208-83728-1f2zbz5js:50:21164) at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-83728-1f2zbz5js:32:6073) at eval (eval at <anonymous> (/tmp/execjs20161208-83728-1f2zbz5js:173:8), <anonymous>:10:23) at eval (eval at <anonymous> (/tmp/execjs20161208-83728-1f2zbz5js:173:8), <anonymous>:17:3) at /tmp/execjs20161208-83728-1f2zbz5js:173:8
Spark plug number four popped out.
It is common on this engine for the spark plugs to pop, and there are two typical fixes: either the spark plug hole could have a new insert put into it, or the head will have to be replaced. I recommend that you have a mechanic, such as one from YourMechanic, inspect your spark plugs, and replace them, if necessary.
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