Pixar just had its worst opening weekend ever. Box office analysts say it's not over yet for 'Elio.'

Pixar's "Elio."

Disney / Pixar

• 'Elio' brought in $21 million domestically over its opening weekend — Pixar's worst showing ever.
• Pixar's last original movie, "Elemental," was previously its worst opening.
• Despite the poor opening, one theater executive thinks "Elio" could have legs this summer.

Hollywood, we have a problem.

Pixar Animation Studios, one of its most reliable cash cows over the last 30 years, has been sputtering lately when it comes to original movies.