Check if there are any updates available. Sometimes you may miss out on any latest updates which are required for the program to run accurately.

Step 1: Open the Opera browser, on the top left corner of the window there is an opera icon click on it.

Step 2: In the appeared list click on Update & Recovery.
Step 3: In the update & recovery window click on Check for the update. If there are any updates available, they will be installed.