Parse error: parse error, expecting `T_PAAMAYIM_NEKUDOTAYIM’

I just got this error. After doing some googling I found an explanation in Wikipedia:

“In PHP, the scope resolution operator is also called Paamayim Nekudotayim, which means “twice colon” or “double colon” in Hebrew. It may be helpful to note that in some cases this error may occur when the $ symbol is not included in the use of a variable.”

 
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